237 results found.
... years ago, geologists refused to recognize any terrestrial meteor craters larger than Arizona's Meteor Crater, which is merely a mile or so in diameter. Now, we have a long list of craters or astroblemes (star wounds), some of which measure hundreds of miles across. In fact, there are enough large dated crters so that some scientists have taken up a time-honored human pastime: Looking for cycles or periodicities in the data. (Humans can find cyclicities in almost any collection of data!) To be more specific, some have claimed that large meteor craters come in clusters dated 28-31 million years apart. These catastrophic events have been correlated with biological extinctions, magnetic field reversals, and basalt flooding. The astronomical causes of this supposed periodicity range from the solar-system's crossing of the galactic plane, to the perturbations of an unseen solar companion, to regular perturbations of the Oort cloud of comets that is thought to hover at the fringe of the solar system. In short, a large, interlocking edifice of geological and astronomical speculation has been erected upon a foundation of terrestrial crater ages. But how well do we really know the ages of these craters? How complete is the cratering record? The answer to the first question is: "Not well at all." Further, we can be certain that many craters still lie undiscovered beneath sediments. In addition, most meteors/comets splashed into the oceans, leaving no record at all. An updating of the most recent crater data available, such as they are, greatly ...
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... Science Frontiers ONLINE No. 59: Sep-Oct 1988 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects "? " ! ?Photographs of Comet Bradfield taken on October 10, 1987, show an odd kink in its tail that does not appear on photos taken the nights before and after. This kink was shaped like a backwards "? ". Kinks in the tails of comets are well known phenomena. A comet's tail is electrically charged, and it flaps in the solar wind like a flag on a gusty day. So why run this observation up the anomaly flagpole? First of all, the Bradfield kink is 10 million kilometers long; second, it appeared and disappeared in a matter of hours. Both size and speed-of-formation are difficult to explain in terms of existing solar-wind velocity and the shifting interplanetary magnetic field. (Anonymous; "Did Anyone Photograph This Comet?" Astronomy, 16:16, July 1988.) Reference. Similar cometary anomalies are cataloged in ACO in: The Sun and Solar System Debris. For information on this book, visit: here . From Science Frontiers #59, SEP-OCT 1988 . 1988-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 50: Mar-Apr 1987 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Too many short-period comets Some comets, such as Halley's , have periods of less than 200 years. Scientists have postulated that these comets, which orbit relatively close to the sun, originally came from the far-distant Oort Cloud on parabolic (non-returning) orbits around the sun. Perturbations by the planets, notably Jupiter, deflected them into the tighter orbits we see today. The problem is that the number of parabolic comets entering the inner solar system from the Oort Cloud of comets (located at the outermost fringes of the solar system) is 100 times too small to account for the existing population of short-period comets. M.E . Bailey believes this discrepancy can be removed if the Oort Cloud possesses a massive inner core of comets. (Bailey, M.E .; "The Near-Parabolic Flux and the Origin of Short-Period Comets," Nature, 324:350, 1986.) Reference. The Oort Cloud of comets is an entrenched part of astronomical dogma. For observations challenging its existence, see our catalog: The Sun and Solar System Debris. A description of this book may be found here . From Science Frontiers #50, MAR-APR 1987 . 1987-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 85: Jan-Feb 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Geomagnetic Storms And Human Health Psychiatric admissions. Since the work of T. Dull and B. Dull in 1935, other studies have reinforced the suspicion that solar activity and the resultant geomagnetic activity are associated with human health problems. Here is the abstract of the latest study found: "Numbers of first admissions per month for a single psychiatric unit, from 1977 to 1987, were examined for 1829 psychiatric inpatients to assess whether this measure was correlated with 10 parameters of geophysical activity. Four statistically significant values were 0.197 with level of solar radio flux at 2800 MHz in the corresponding month, -0 .274 with sudden magnetic disturbances of the ionosphere, -0 .216 with the index of geomagnetic activity, and -0 .262 with the number of hours of positive ionization of the ionosphere in the corresponding month." (Raps, Avi, et al; "Geophysical Variables and Behavior: LXIX. Solar Activity and Admission of Psychiatric Inpatients," Perceptual and Motor Skills , 74:449, 1992.) Comment. The above correlations are significant, but who knows how these parameters operate on the human body? Cancer recurrence. Another possible health correlation was explored by H. Wendt in a paper presented atthe 1992 European meeting of the Society for Scientific Exploration, in Munich. In this paper, Wendt claimed a correlation between the incidence of cancer recurrence and geomagnetic storm activity. Hopefully, further details will soon ...
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... Science Frontiers ONLINE No. 7: June 1979 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The sun controls the earth's global electrical circuit Data collected from electrosondes (balloons measuring atmospheric electrical currents) over the Antarctic ice caps infer that solar flares stimulate large surges in the flow of electrical charge from the upper atmosphere to the earth's surface. Because this unidirectional flow of fair-weather electricity must ultimately be balanced by thunderstorms somewhere on the planet, it follows that the frequency and severity of terrestrial thunderstorms are dictated, at least on the average, by solar activity. Formerly, global circuit theory had it that the thunderstorms themselves were the driving force behind the fairweather current flow. Now it seems that the sun calls the tune and that thunderstorms do not arise at random. (Anonymous; "Solar Activity and Terrestrial Thunderstorms," New Scientist, 81:256, 1979.) From Science Frontiers #7 , June 1979 . 1979-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 75: May-Jun 1991 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Halley reappears!No, comet Halley has not reversed direction for an anomalous encore. We'll have to wait another 70-or-so years for that. However, Halley did make a surprise reappearance on February 12, 1991. Astronomers were startled by a sudden flare-up. It was not a trivial brightening; the width of the flare was a remarkable 300,000 kilometers. Comets often flare up as they swing close to the sun and absorb its heat and radiation. But Halley is now billions of kilometers away in the frigid reaches of the outer solar system. No one knows what happened. (Pease, Roland; "Halley at Large," Nature, 349:732, 1991.) Comment. Other comets have mysteriously flared up far from the sun. See ACO2 in our catalog The Sun and Solar System Debris. Apparently comets harbor considerable pent-up energy. If proximity to the sun is not required to stimulate gas releases or chemical reactions, comets may have their own energy agenda. Comets seem to be little more than chunks of dirty ice. Where could the flare energy come from? If only cold fusion were a viable "acceptable" energy source! To order The Sun and Solar System Debris, see: here . From Science Frontiers #75, MAY-JUN 1991 . 1991-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 44: Mar-Apr 1986 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Of Dust Clouds And Ice Ages Ice cores from the polar ice at Camp Century, in Greenland, have been analyzed for the presence of cosmic dust. "It is concluded that on five occasions during the interval 20,000-14,000 years BP, cosmic dust mass concentrations in the solar system rose by one and two orders of magnitude above present day levels. Moreover if the particles found in these ice core samples are indicative of the particle size distribution which prevailed in the interplanetary medium at that time, then it may be concluded that the space number density of submicron sized particles must have uncreased by a factor of 105 or more. During these times the light transmission properties of the solar system would have been significantly altered resulting in major adverse effects to the earth's climate. Thus it is quite possible that these dust congestion episodes were responsible for the abrupt climatic variations which occurred toward the end of the last Ice Age." Whence these interplanetary dust clouds? The author of this article ruled out terrestrial volcanism (an insufficient source of iridium) and encounters with asteroids and cometary tails (too infrequent to account for the long periods of high dust levels). Rather, the dust source may have been the same event that created the recently discovered dust ring between Mars and Jupiter, which is believed to be only a few tens of thousands of years old. The nature of the "event" is not ...
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... Science Frontiers ONLINE No. 31: Jan-Feb 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Sun As A Scientific Instrument In connection with the preceding item on solar oscillations and asymmetry, a few brave astrophysicists are now proposing that one mode of solar oscillation (the 160-minute period) is really a manifestation of the sun "ringing" in response to gravity waves sweeping through it! A nearby binary star, Geminga, has a period of this length. It seems that the 160-minute oscillation of the sun is far too long to be a solar pressure wave, and external forces could conceivably be involved. This article also mentions "the throbbing earth" reported in SF#30, an effect which may result from gravitational waves emanating from the center of our galaxy. (Walgate, Robert; "Gravitational Waves on the Sun?" Nature, 305:665, 1983.) From Science Frontiers #31, JAN-FEB 1984 . 1984-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 77: Sep-Oct 1991 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Mercury: the impossible planet Mercury, largely hidden in the sun's glare, also conceals beneath its baked, cratered surface: (1 ) far more iron than solar-system theory allows; and (perhaps) (2 ) a dynamo that should not exist. Let us take the excess-iron problem first. Mercury's density is 5.44 (compared to earth's 5.52), so that it very likely contains much iron. Our moon, which resembles Mercury in size and external appearance, only has a density of 3.34, implying an altogether different origin. In the currently accepted theory of solar-system formation, all of the planets and their satellites condensed from a primordial disk of dust sur rounding the just-formed sun. The planets closer to the solar inferno lost more of their easily vaporized constituents due to the sun's heat. The cooler, outer planets were able to retain large amounts of ices. In this scenario, we would expect Mercury to be rich in iron and rocks. This seems to be the case, but it has too iron to fit the theory. Astronomers have tried to save the theory by supposing that a large asteroid sideswiped Mercury tearing off part of its outer layer of lighter rocks, leaving the heavier iron core untouched. The theory doesn't say what happened to the debris from this colossal collision. As for Mercury ...
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... Science Frontiers ONLINE No. 6: February 1979 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Venus Has Uncertain Pedigree The five instrumented Pioneer probes that plunged into the thick Venusian atmosphere in late 1978 discovered unexpectedly large quantities of the isotope argon-36. The significance of argon-36 is that it is supposed to be primordial argon; that is, an argon isotope formed when the solar system was born. Since argon-36 is radioactive, most of the original supply of this isotope should have disintegrated and disappeared over the 4-billion-year history of the solar system. Indeed, the atmospheres of earth and Mars have much, much smaller quantities of argon-36 than Venus. Venus, therefore, may have had an origin different from that of earth and Mars -- either a much more recent birth (such that the argon-36 has not all disintegrated), or an altogether different kind of origin in which more argon-36 was created than was the case for earth and Mars. (Anonymous; "Venus Probes Solar System Birth," New Scientist, 80:916, 1978.) From Science Frontiers #6 , February 1979 . 1979-2000 William R. Corliss ...
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... bombard earth's atmosphere." (Anonymous; "Space Streakers," Astronomy, 27:34, March 1999.) "The most powerful explosion ever ever observed -- a deep space eruption detected in January -- released in just seconds a burst of energy equal to billions of years of light from thousands of suns. Researchers say in studies to be published today that the explosion, called a gamma-ray burst, occurred 9 billion light years from earth. What caused the explosion is a mystery." (Anonymous; "Blast's Light May Have Been Greater Than Rest of Universe," Baltimore Sun, March 26, 1999.) "Every day, the sun blows billions of tons of ionized gas, electrons and protons into space -- the "solar wind." Sometimes, especially near the solar maximum, this wind is punctuated by squalls and storms of dangerous highenergy particles." Two giant solar storms erupted in 1972. Luckily, they were sandwiched between Apollo 16 and Apollo 17 missions to the moon. If the astronauts had been caught on the lunar surface during one of these storms, they would probably have died. (Roylance, Frank D.; "Sun Puts Chill on Space Missions," Baltimore Sun, Apil 1, 1999.) From Science Frontiers #123, MAY-JUN 1999 . 1999-2000 William R. Corliss ...
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... : ". .. threaten the universe with an irreversible loss of information, which seems to contradict other laws of physics." (Ref. 2) Adding to these problems are nagging doubts about General Relativity, which underpins black-hole theory. Recently, some theorists have shown that General Relativity requires that two bodies of approximately equal size not attract one another! (Ref. 2) Despite all these qualms, black holes have become a fixture of astronomy because they promise to explain the incredibly powerful energy sources seen in the cores of galaxies. Do astronomers really observe black holes? The answer is: MAYBE. And even if YES, there are not nearly enough of them to satisfy theory. To illustrate, according to present theory, when stars weighing in at less than three solar masses collapse, they become neutron stars; if larger, the stars turn into small black holes. Theoretically, there should be one small black hole for every three neutron stars. But with some 500 neutron stars already pin-pointed, only 3 "possible" small black holes have been given votes of confidence; namely, Cyg X-1 , LMC X-3 , and AD 620-00. All objects previously proclaimed to be small black holes have instead turned out to be neutron stars. (Ref. 1) The case for massive black holes weighing in at millions of solar masses is not overwhelming either. These are supposed to lurk in the centers of galaxies. To find them, astronomers look for intensely bright spots in galaxies, around which swirl stars at speeds ...
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... Science Frontiers ONLINE No. 91: Jan-Feb 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Two-faced planets and moons Several solar-system objects present asymmetrical visages to our telescopes. Mars is a classic case, being much more heavily cratered in its southern hemisphere than its northern. But the dichotomies are not restricted to cratering, as we shall now see. Neptune . Recently, H.B . Hammel, using the University of Hawaii's 2.2 -meter telescope, discovered that Neptune's northern hemisphere is now brighter than its southern -- something never observed before. During the past eight years, the southern hemisphere has been consistently brighter, although the hemispheres were of roughly equal brightness during the late 1970s. The cause of these brightness changes remains a mystery. (Cowen, Ron; "Neptune's Northern Half Grows Brighter," Science News, 144:287, 1993.) Iapetus . This satellite of Saturn is dark on one half and light on the other. Quantitatively speaking, the bright side reflects ten times more incident light than the other. An explanation is suggested by the fact that the dark side points in the satellite's direction of motion. A recent study of 12 Voyager images of Iapetus also imply an exogenous (externally imposed) origin of the dark surface, because they show a gradual rather than sharp transition between the dark and light regions. The thought of planetary scientists is that micrometeoroids bombard the leading hemisphere of Iapetus preferentially and in the process volatilize ...
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... dust. How could a comet emit X-rays? When a German-American team of scientists proposed taking a peek at Hyakutake with ROSAT, scientific eyebrowns were raised. What a waste of observing time! At the most, the team thought they might pick up a smudge of weak X-rays where dust grains flying off Hyakutake collided with dust grains normally present in interplanetary space. The team did get ROSAT to take a look, and what the satellite saw ignited a controversy. Some 50,000 kilometers in front of the comet was a bright crescent of X-rays, 100 times brighter than the brightest "smudge" the team of scientists had hoped for. This was completely unexpected. All astronomers could do was come up with three rather unconvincing theories: (1 ) Solar X-rays were absorbed and reemited by the comet (Xray fluorescence); (2 ) Cometary material emitted X-rays when bathed in the solar wind; and (3 ) Charged particles were somehow accelerated by a magnetic field compressed by the comet's bow wave in the solar wind. Nobody is particularly happy with any of these theories. (Hecht, Jeff; "Comet Bids Farewell with Blaze of X-rays," New Scientist, p. 18, April 20, 1996. Glanz, James; "Comet Hyakutake Blazes in X-rays," Science, 272:194, 1996) Comment. Serendipity has struck again! Imagine all the phenomena we are missing because we know they can't happen! From Science Frontiers #106, JUL- ...
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... scientists have thrown away their careers by suggesting something so ridiculous. But the data are there -- in the form of dark spots on satellite images of the earth's dayglow -- and late results continue to support this far-out interpretation, ridiculous or not. "The mass of these objects is estimated at about 108 gm each, and the total flux is about 107 small comets per year. If this flux is representative of the average flux over geologic time, then the water influx is sufficient to fill the Earth's oceans. The fluxes of these objects are also large for all the planets outside the orbit of Earth. Considerations of thermal stability imply that the fluxes of comets that impact Venus are considerably less. The outer giant planets may be significantly heated relative to solar insolation by the small-comet impacts. For example, the total energy input due both to solar insolation and comet impacts may be similar for Uranus and Neptune. Thus it is possible that the temperatures of these two planets are similar, even though Neptune is farther from the Sun." (Frank, L.A ., et al; "On the Presence of Small Comets in the Solar System," Eos, 68:343, 1987.) Comment. What has all this to do with "cosmic Gaia"? By "cosmic Gaia" we mean the cosmic version of the conventional Gaia concept; i.e ., earth-as-an-organism. The answer is that small icy comets can in principle transport throughout all of space: Immense quantities ...
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... Science Frontiers ONLINE No. 113: Sep-Oct 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A VANISHED PLANET?Almost every week, it seems, a new Texas-sized object is discovered in the outer solar system. In the inner solar system, however, some astronomers are finding "holes" where planets seem to have been ejected by unknown forces. D. Christodoulou, Louisiana State University, found one such "hole" serendipitously. He was studying how the sun and the planets might have condensed from the (hypothesized) cloud of primordial gas and dust. Factoring in gravity, rotation, and magnetic fields, he found the cloud condensing in concentric rings at just the right locations for protoMercury, proto-Venus, and proto-earth. The fourth ring, however, did not correspond to any existing planet, and the position of proto-Mars was off the mark. But the asteroids and outer planets fell rather neatly into place. The implication of these calculations is that some turmoil in the early inner solar system cast out one planet and dislocated Mars. (Hecht, Jeff; "Did Extra Planet Vanish into Outer Space?" New Scientist, p. 18, June 14, 1997.) Comment. These are sour notes in the "music of the spheres," but don't be overly concerned; these are just calculations based upon many assumptions. Calculated positions of rings of condensed dust and gas compared to actual planet locations. From Science Frontiers #113, SEP-OCT ...
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... Webbed Hands and Feet BHA50 Alleged Primitive Character of Human Hands and Feet BHA51 Large Female Breasts and Buttocks BHA52 The Unusual Location of Human Breasts BHA53 Human Tails BHA54 Concordance of Human Embyro Growth and Evolutionary Developments BHA55 Anomalous Human Odors Babies Born with Full Sets of Teeth Presidential Stature Correlated with Competence Brown Line (Linea Nigra) on Stomachs of Pregnant Women Humans As Robots Height Correlated with Month of Birth Human Proportions and the Golden Ratio Humans Nuturing Foetuses of Their Twins Human Pheromones Correlated with Beauty Pixies and the Williams Syndrome Change of Eye Color with Age Skin Color Correlated with Weather Male Fertility Correlated with Finger Length Anomalous Sound Production The Devil's Spot and Witch Pricking BHB ANOMALOUS HUMAN BEHAVIOR BHB1 Apparently Irrational Human Behavior BHB2 Similarities in the Behaviors of Identical Twins Reared Apart BHB3 Correlation of Disturbed Human Behavior and Solar Activity BHB4 Correlation of Disturbed Human Behavior and Lunar Phase BHB5 Correlations of Disturbed Human Behavior, Stormy Weather, and Infrasound BHB6 Correlation of Human Behavior and Climate and/or Season of the Year BHB7 Unusual Behavior Induced by Rhythmic Stimuli [BHH8, PBH] BHB8 Cyclicity of Violent Collective Behavior BHB9 A Relationship between Number of Wars and Number Killed BHB10 Correlation of Economic Activity with Solar Activity BHB11 Correlation of Economic Activity with the Lunar Tidal Forces BHB12 Correlation of Economic Activity with Solar-System Configurations BHB13 Periodicities in Various Economic Parameters BHB14 Human Culture: An Enigma of Evolution BHB15 Cycles of Religiousness BHB16 "Flock Behavior" in Human Groups BHB17 The Evolution and Persistence of Altruism BHB18 The Evolution and Persistence of Homosexuality BHB19 Unusual Human Sexual Activity BHB20 The Puzzle of Human Handedness BHB21 Handedness and Longevity BHB22 Handedness ...
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... Science Frontiers ONLINE No. 52: Jul-Aug 1987 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Carbon In A New Comet Astronomers in Australia have confirmed that organic matter exists in Comet Wilson, which is on what is believed to be its first and only visit to our Solar System. "It is the first time that organic matter has been found on a comet new to the Solar System. The astronomers, who observed the comet from the AngloAustralian Telescope at Siding Spring Observatory in New South Wales, say that this finding lends weight to the theory that comets brought to Earth the carbon-based chemicals from which life evolved." (Anonymous; "Astronomers Spot Carbon in a New Comet," New Scientist, p. 23, May 28, 1987.) Reference. Organic compounds in meteorites are cataloged under AYE2 in our catalog: The Sun and Solar System Debris. To find out more about this book, visit: here . From Science Frontiers #52, JUL-AUG 1987 . 1987-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 71: Sep-Oct 1990 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects ASTRONOMERS COPE WITH BOTH CHAOS AND TOO MUCH ORDER IN THE UNIVERSE The solar system . The recent advent and fast rise in popularity of chaos theory is destroying some favorite, long-sworn-to notions of astronomers. One in particular is solar-system stability. Could any of the planets pop out of their orbits and embark upon wild and unpredictable trajectories? "We can't rule it out," stated J. Wisdom, an MIT planetary scientist. (Freedman, David H.; "Gravity's Revenge," Discover, 11:54, May 1990.) Comment. Well, OK, there is a tiny theoretical chance that such an event might occur in the future, but it certainly never happened in the past. To admit such a possibility would open that Pandora's Box of vigorously suppressed catastrophic scenarios. Reference. More information on solarsystem instability may be found in ABB1 in the catalog: The Sun and Solar System Debris. Ordering details here . The universe as-a -whole . The disovery of the Great Wall of galaxies (SF#67) and the regular clumping of galactic matter (SF#69) has greatly surprised astronomers, who have been emphasizing how uniformly distributed galactic matter should -- according to theory, at least. Now, D.C . Koo, at the University of California at Santa Cruz, says, "The regularity is just mind- ...
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... Science Frontiers ONLINE No. 93: May-Jun 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Anomalous Horizon Glows Seen On The Moon The spacecraft Clementine , now engaged in surveying the moon from orbit, has apparently recorded once again a perplexing sky glow that precedes lunar sunrises and follows lunar sunsets. An astronaut standing on the moon watching the spot where the sun is about to rise would see first of all two well-recognized phenomena: the solar corona (even though the solar disc is still well below the horizon) and the zodiacal light (sunlight reflected from interplanetary dust). In addition, the astronaut would detect a glow along the horizon itself, as in the illustration. Since the moon is virtually airless, there should be none of those gas molecules and suspended dust particles that cause the sunsets and sunrises that we admire so much here on earth. Still, there must be something suspended above the moon's surface to scatter light from the sun still located just below the horizon. The best guess is that lunar dust particles are ionized by solar radiation and are repelled upwards from the surface and hang there suspended by electrostatic forces. But no one really knows for certain the cause of the glow. (Cowen, R.; "On the Horizon: Clementine Probes Moon Glow," Science News, 145:197, 1994.) Reference. Anomalous lunar horizon glows are cataloged in ALO11 in our catalog: The Moon and the Planets. For details, visit here . From Science Frontiers #93 ...
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... "perfect" -- at least as far as human aesthetics are concerned. (Other entities might yearn for asymmetry, who knows?) Anyway, Mirror Matter is defined as being palpable and could also be that "missing mass" or "dark matter" that astronomers need to explain why spinning galaxies do not fly apart. Mirror Matter could also account for some mysterious terrestrial phenomena such as that unaccountable lack of a significant crater in Siberia, where the 1908 Tunguska blast leveled a huge forest but hardly disturbed the ground. Recently, Mirror Matter has been invoked to explain the ups and downs of terrestrial biodiversity. R. Foot and Z. Silagadze propose that the 26-millionyear periodicity in terrestrial extinctions -- claimed to be present in the fossil record -- is due to a solar-system planet made of Mirror Matter (and therefore invisible). This postulated planet has a period of 26-million years and regularly gravitationally jostles the Oort Cloud of comets on the periphery of the solar system. These jolts unleash torrents of devastating comets upon the inner solar system every 26-million years, thereby blasting the earth and its sensitive biological cargo. This supposed Mirror-Matter planet happens to be the conceptual double of a Normal-Matter, hypothetical planet named Nemesis, which was proposed in the 1980s to account for the same periodical extinctions in the fossil record. However, diligent searches did not locate Nemesis. Of course, if Nemesis were made of Mirror Matter, as now proposed, it would have escaped telescopic detection then and would still elude our telescopes today! ...
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... No. 51: May-Jun 1987 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Were titius and bode right?For a couple of centuries, astronomers have been trying to explain in physical terms why the empirical and very simple formula of Titius and Bode works so well. It is only an unimposing geometric progression, which, if one inserts the earth's average distance from the sun, yields the distances of the other planets with enough accuracy to perturb astronomers. You see, all scientists abhor numerology. They must insist that the Titius-Bode Law has physical underpinnings. S. Weldenschilling and D. Davis now propose that the planets owe their present positions to a combination of two effects: The frictional drag of the gas in the solar nebula, which favors the presence of small planets in the inner solar system. Gravitational perturbations that create favored places for the coalesceing of planets. C. Patterson has expanded on this suggestion and finds that a model based on these effects works quite well for Jupiter and beyond, where planets are "bound together" in an interlocking system of orbital-period resonances. (See diagram.) Several important anomalies persist, however. That vacant niche between Uranus and Neptune is presently unexplained. In the inner solar system, the presence of Mercury is "embarrassing." (Anonymous; "Were Titius and Bode Right?" Sky and Telescope, 73:371, 1987. Reference. The "problem" of Mercury is treated in AHB2 in The Moon and the Planets. This catalog ...
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... Science Frontiers ONLINE No. 60: Nov-Dec 1988 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Icy comets evaporating?To keep the scorecard up-to-date, we here record the probable obliteration of observations of excess hydrogen in the inner solar system. Mentioned in SF#58, this excess hydrogen was observed from Voyager 2, as it cruised toward Mars and looked backward towards earth. Al-though the amount of excess hydrogen detected was only l/10,000,000-th of that required by the small icy comets postulated by L. Frank et al, the result was surprising and gave a boost to the icy comet theory. Unfortunately, perhaps, the "excess" hydrogen evolved from a clerical error, when a student miscopied a figure during the data analysis. (No PhD for that student!) Frank's icy comets are in even deeper trouble, since independent analysis hint that his satellite data may be attributable to instrument noise. (Kerr, Richard A.; "Comets Were a Clerical Error," Science, 241:532, 1988. Also: Hall, D.T ., and Shemansky, D.E .; "No Cometesimals in the Inner Solar System," Nature, 334:417, 1988.) From Science Frontiers #60, NOV-DEC 1988 . 1988-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 96: Nov-Dec 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects On the sun, south is almost everywhere Astronomers have been shocked by the discovery that the sun has no south pole! "Instruments on board the probe Ulysses have been measuring the radial component of the solar magnetic field. The field lines were expected to become more bunched and intense as the probe approached the south pole. 'Instead, the strength of the magnetic field remained absolutely constant,' says Richard Marsden, a project scientist on Ulysses." (Anonymous; "No Solar Pole," New Scientist, p. 11, September 24, 1994.) From Science Frontiers #96, NOV-DEC 1994 . 1994-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 108: Nov-Dec 1996 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Sunspots And Planetary Alignments Many scientists and laymen have noticed that the sunspot cycle and Jupiter's period are both about 11 years. This must be a coincidence, because the tidal forces exerted on the sun by distant Jupiter seem far too weak to disturb the sun's internal operations. (See details in ASO9 in The Sun and Solar System Debris.) Could it be that we are missing something, for there is some evidence that some planetary alignments also exert influence on the number of spots seen on the sun's face? In particular, the Uranus-Neptuneearth conjunction has been investigated by B. Payne, who wrote the following in Cycles: "Sunspots increase when two or more planets line up, an effect I have observed for more than a decade. During the last six years, Uranus and Neptune have been within a few degrees of each other. Their conjunction, which occurs every 137 years, is an ideal situation to validate the hypothesis that sunspot numbers are associated with planetary positions." Payne's lengthy analysis is omitted, but the essence of his study can be seen in the accompanying graph. He concludes: "The results clearly show that sunspot numbers increase markedly during Uranus-Neptune-Earth-sun alignments." (Payne, Buryl; "Sunspot Number Changes during Planetary Alignments," Cycles, 45:146, 1995) Comment. It will take a lot more than ...
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... Science Frontiers ONLINE No. 120: Nov-Dec 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Force Is With Them The communication loop between earthbased ground stations and interplanetary spacecraft allows extremely accurate measurements of the radial velocities of these distant man-made machines. As these spacecraft hurtle toward the fringe of the solar system, the visible sun dwindles to a small, bright point, and its gravitational field falls off as the inverse square of the distance. At least that is what is supposed to happen. Four far-flung spacecraft, (Pioneer 10, Pioneer 11, Ulysses, and Galileo are experiencing a mysterious decelerating force not encompassed by the Law of Gravitation. It's a tiny force, but it seems to be real. Making it even more puzzling is the fact that it is decreasing according to the inverse of distance from the sun rather than the inverse square. Is it a non-solar force? Is it "new" physics? Or maybe just an artifact of the spacecraft and ground-based equipment? The fact that four spacecraft feel its tugging suggests the force is real. But the motions of the distant planets do not seem to be affected by it. So, everyone is perplexed. (Schilling, Govert; "Spacecraft Motions Puzzle Astronomers," Science, 281:1581, 1998. Seife, Charles; "If the Force Is with Them...," New Scientist, p. 4, September 12, 1998. Browne, Malcolm; "After Study, ...
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... Science Frontiers ONLINE No. 40: Jul-Aug 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects What is it? a black hole, of course!Radio-telescope measurements of the compact radio source, churning away in the center of our Galaxy, reveal that it is only 20 AU in diameter at radio wavelengths of l.35 centimeters. This is roughly the size of the solar system inside Saturn's orbit. This tiny radio source is so energetic that there seems no escaping the conclusion that it is a blackhole. No other astronomical object is capable of generating so much energy in so small a volume. Since other galaxies also seem to harbor small, but very powerful radio sources in their centers, astronomers wouldn't be too surprised if all galaxies had black-hole cores. Quasars, in fact, might be galaxies with spectacularly active centers. Would these unseeable black holes be the notorious "missing mass" in the universe? Not likely. The mass of the purported black hole in our Galaxy is only about several million solar masses-- not even close to what is needed. (Maddox, John; "Black Hole at the Galactic Centre," Nature, 315:93, 1985.) Comment. Actually, it would be rather amusing if the problem of the missing mass, which we cannot see, were solved by black holes, which we cannot see either! Reference. Black holes and other cosmological entities are discussed in our Catalog: Stars, Galaxies, Cosmos. to ...
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... Science Frontiers ONLINE No. 38: Mar-Apr 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Young Interplanetary Dust Here follows an abstract of an article that appeared in Science: "Nuclear tracks have been identified in interplanetary dust particles (IDP's ) collected from the stratosphere. The presence of tracks unambiguously confirms the extraterrestrial nature of IDP's , and the high track densities (1010 to 1011 per square centimeter) suggest an exposure age of approximately 104 years within the inner solar system." (Bradley, J.P ., et al; "Discovery of Nuclear Tracks in Interplanetary Dust," Science, 226:1432, 1984.) Comment. Where does this young dust come from? The Poynting-Robertson drag is supposed to sweep the inner solar system clear of dust fairly quickly. If comets supply a steady stream of dust, the particles should display a wide range of exposure ages. Apparent path of star SAO 186001 behind Neptune. The star's light was reduced at the black circle. From Science Frontiers #38, MAR-APR 1985 . 1985-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 139: Jan-Feb 2002 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Unstable Earth?We all know that the earth's spin axis precesses, giving us the 26,000-year precession of the equinoxes. There is also that Chandler wobble of 14 month's length. These phenomena are accepted by science. Australian geologist, P.M . James terms them "politically correct" to separate them from motions of the earthas-a -whole that are not digestible by most scientists. James, an obvious iconoclast, is just the right person to suggest that in historical times the earth has not been as rotationally stable as is generally assumed in scientific circles. James asserts that records of ancient total solar eclipses imply large departures from stability. He mentions five such maverick eclipses. Time Place Observer 05-05-585 BC Athens Herodotus 08-05-431 BC Athens Thucydides 11-11-129 BC Hellespont -- - 04-15-136 BC Babylon -- - 03-20-71 AD Chaeronia Plutarch The dates of these five eclipses are not at issue; back-calculations confirm them. However, these eclipses should not have been observable where reported. For example, the path-of-totality for the 136-BC eclipse should have been 4000 kilometers west of Babylon! Today's astronomers have no choice but to discard these data as erroneous. Yet, it is hard to be wrong about where one observes a total solar eclipse, and here we ...
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... Science Frontiers ONLINE No. 99: May-Jun 1995 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Ballistic Panspermia Scientists are already convinced that cratering events on the moon and Mars have propelled rocky debris in the direction of the earth, and that some of these fragments have landed here in the guise of meteorites. A logical question is: Can life forms and/or chemical precursors of life be transported thus across the far reaches of the solar system? Can one planet infect another ballistically? An analysis by M.K . Wallis and N.C . Wickramasinghe is rather warm towards this idea: "The mass of escaping ejecta from the presumed 10-km comet that caused the 180-km Chicxulub crater, with a radius of roughly 10 km and 1 m deep, amounted to ~300 Mm3 , of which one third may have been rock and 10% higher-speed ejecta that could have transited directly to Mars. It may have taken 10 Ma to impact Mars but...the probability is not exceedingly low but 0.1 -1 %. "The survival and replication of microorganisms once they are released at destination would depend on the local conditions that prevail. Although viability on the present-day Martian surface is problematical, Earth-to-Mars transfers of life were feasible during an earlier 'wet' phase of the planet, prior to 3.5 Ga ago. The Martian atmosphere was also denser at that epoch, with several bars of CO2 , thus serving to decelerate meteorites, as ...
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... Science Frontiers ONLINE No. 123: May-Jun 1999 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Eclipse Shadow Bands E. Strach had the good fortune to have camcordered those elusive eclipse shadow bands that flit across the ground just before and after total solar eclipses. The time was February 26, 1998; the place, Knip Beach, Curaco. Strach had first laid out a 53-centimeter-diameter white screen on the ground. He pointed his camcorder at the screen and pressed the ON switch 4 minutes before second contact. Playing back his recording, he was not a little surprised to find he had an excellent record of the curious parade of the hard-to photograph dark bands. "They were clearly seen for 32 seconds before the second contact and a little fainter for 27 seconds after totality. They moved rapidly across the screen from E to W before totality and from NNE to SSW after 3rd contact. Slow motion studies of the video show occasional merging of the bands and at times they seem to move in opposite directions -- probably a stroboscopic effect." The widths of the bands varied from 2.36 to 6.63 centimeters. (Strach, Eric; "Shadow Bands Recorded at February 26 Eclipse," British Astro nomical Association, Journal, vol. 108, 1998. Comment. Theorists have long been challenged by these ghostly, fleeting shadows. Their widths change; their directions and speeds vary; they come in different colors; sometimes more than one set of bands appear; giant bands ...
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... the abundant evidence for the existence of large quantities of primordial hydrocarbons deep within the earth and (probably) many other planets throughout the universe. Associated with these hydrocarbons is a "deep, hot, biosphere." By "deep" Gold means 100 kilometers and more. It is this combination of a deep reservoir of hydrocarbons and life forms (probably mostly bacteria) that can account for (among other things): The fact that all helium comes from oil and gas wells The fact that the composition of petroleum is not what one would expect from the decomposition of plants and animals. It is really a mixture of primordial hydrocarbons with some added biochemical by-products; that is, products of that "deep" biosphere. Since carbonaceous material is now known to be common in the solar system (comets, carbonaceous chondrites, etc.), it is likely that many other planets also possess deep stores of hydrocarbons. In these deep, warm, protected, energyrich "wombs," complex biospheres might readily evolve. In Gold's view, deep biospheres may be the rule and surface life the exception! Finally, Gold sees life as merely a natural process with no more meaning and purpose than accelerating the breaking of chemical bonds and thereby increasing entropy! "It has been said that nature abhors a vacuum, but nature doesn't care much for free energy either. All of biology is just a device for degrading energy from chemical sources, and on the surface from the great temperature differential between the hot sun and the cold of space. Perhaps biology is ...
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... Science Frontiers The Book Strange reports * Bizarre biology * Anomalous archaeology From New Scientist, Nature, Scientific American, etc Archaeology Astronomy Biology Geology Geophysics Mathematics Psychology Physics Science Frontiers The Book Contents Science Frontiers is an indexed compilation of the first 86 issues of our Science Frontiers newsletter . Chapter 1. Archeology: Ancient Engineering Works * Small Artifacts * Epigraphy and Art * Bones and Footprints * Diffusion and Culture. Chapter 2. Astronomy: Planets and Moons * Solar System Debris * Stars * Galaxies and Quasars * Cosmology. Chapter 3. Biology: Humans .* Other Mammals * Birds * Reptiles and Amphibians * Fish * Arthropods * Invertebrates * Plants and Fungi * Microorganisms * Genetics * Origin of Life * Evolution. Chapter 4. Geology: Topography * Geological Anomalies * Stratigraphy * Inner Earth. Chapter 5. Geophysics: Luminous Phenomena* Weather Phenomena * Hydrological Phenomena * Earthquakes * Anomalous Sounds * Atmospheric Optics. Chapter 6. Psychology: Dissociation Phenomena * Hallucinations * Mind - Body Phenomena * Hidden Knowledge * Reincarnation * Information Processing * Psychokinesis. Chapter 7. Chemistry, Physics, Math, Esoterica: Chemistry * Physics * Mathematics. Comments from reviews: "This fun-to-read book may lead some to new scientific solutions through questioning the phenomena presented", Science Books and Films Publishing details: 356 pages, paperback, $18.95, 417 illus., subject index, 1994. 1500+ references, LC 93-92800 ISBN 0-915554-28-3 , 8.5 x 11. Order From:The Sourcebook Project P.O . Box ...
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... Science Frontiers ONLINE No. 131: SEP-OCT 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Green Misconceptions More trees are better for the environment . The Kyoto protocol recommends that we should all plant more trees, because trees help remove carbon dioxide from the atmosphere. CO2 is a green-house gas, and its reduction should slow global warming. At least, this is how the Kyoto logic went. More trees may be good for the environment in the tropics, but the reverse is true in lands that are covered with snow most of the year. This is be-cause snow reflects much of the impinging solar energy back into space. If these northern lands were heavily forested, much of the solar energy would be absorbed and converted into heat. Climate-modellers confirm that sunlight-reflecting snow is better for the environment than trees. (Anonymous; "Reflect on It," New Scientist, p. 19, May 13, 2000.) Hydroelectric power is clean . Although widely proclaimed to be among the cleanest energy sources available, some hydroelectric powerplants actually con-tribute more greenhouse gases than large coal-fired plants! Submerged vegetation is the problem. When it decays, it releases greenhouse gases---in quantity. The forests first submerged by the reservoirs behind the dams contribute gases for only a few years. Most of the troublesome biomass is fed into the reservoirs from upstream. Compounding the problem are the vast areas of stagnant water behind many hydroelectric dams. There, in the absence of ...
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... Science Frontiers ONLINE No. 85: Jan-Feb 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Electronic Channeling Those ubiquitous solar-powered calculators may be the latest mechanism by which other "intelligences" are trying to communicate with us. Here is how this novel information channel works. You put your solar-powered calculator (a cheap one will do) in your desk drawer and close it. When you again open the drawer and light hits the calculator, a number, perhaps a letter, or even an unrecognized symbol may appear. What's going on here? What do these "messages" mean? C. Bentley, in a letter to the New Scientist, related how his calculator most frequently flashes the number 5, but many other numbers may also appear. His calculator works perfectly after he has disposed of the gratuitous information. Something must be generating these strange data. In his final paragraph, Bentley muses: "It has occurred to me that perhaps someone or something is trying to communicate but I fear that if this is the case the message has so far eluded me. The numbers don't work on pools either." (Bentley, Chris; "Dark Secret," New Scientist, p. 52, October 10, 1992.) From Science Frontiers #85, JAN-FEB 1993 . 1993-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 14: Winter 1981 Supplement Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Venus: highly radioactive or just cooling down?The surface temperature of Venus is about 480 C, higher than any other solar system planet. While Venus does trap solar radiation in its atmosphere greenhouse fashion, data from Pioneer Venus Orbiter show that the planet radiates 15% more energy than it receives from the sun. In other words, Venus's surface is hotter then it would be if only the greenhouse effect were operating. Where could this extra energy come from? If it arises from the decay of naturally occurring radioactivity, Venus would have to have 10,000 times as much radioactivity as the earth. If this is the case, Venus must have had an origin radically different from the earth's . (Anonymous; "The Mystery of Venus's Internal Heat," New Scientist, 88:437, 1980.) Comment. Another possibility is that Venus is still cooling down and is much younger than the earth! From Science Frontiers #14, Winter 1981 . 1981-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 58: Jul-Aug 1988 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Maize in ancient india Lanzarote: un noveau bimini? Astronomy Is the earth seeding the rest of the solar system? One of the most astonishing discoveries of modern science! A COSMIC CAUSE FOR THE OZONE HOLE? Chaotic dynamics in the solar system Biology Do right-handers live longer? John heymer still doesn't believe the stock shc explanations! Bacteria Preternaturally rapid development of photosynthesis? Geology Gentry's tiny mystery-- unsupported by geology Earlier pages in earth's history revealed Geophysics From forteanism to science Mystery at novaya zemlya Ball lightning or mirage of venus? Psychology Mystery of the idiot savant General Has the speed of light decayed? Anomalistics at the aaas meeting ...
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... Science Frontiers ONLINE No. 8: Fall 1979 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Are the sun's fires going out?After reviewing solar maeasurements from the last 200 years, Jack Eddy, of the Smithsonian Observatory, has concluded that the sun's diameter shrinks by about 10 kilometers per year. This observation fits nicely with the ten-year-old enigma of missing solar neutrinos. A shrinking diameter implies a cooling sun, while the paucity of neutrinos suggests that the sun's nuclear fires are at a low ebb. Something similar may have happened in the 17th. Century when the so-called Little Ice Age prevailed. (Anonymous; "Scientists Shrink from Smaller Sun," New Scientist, 82:982, 1979.) From Science Frontiers #8 , Fall 1979 . 1979-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 90: Nov-Dec 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Alien Meteors Meteors or shooting stars are usually considered to be small fragments that have been broken off the asteroids plying orbits between Mars and Jupiter. If this belief is correct, meteors darting into the earth's upper atmosphere would have speeds less than 260,000 kilometers per hour. Any objects with significantly higher velocities must come outside the solar system. It has, therefore, been unsettling to find that quite a few meteors hit our atmosphere at speeds much higher than 260,000 km/hr. Radar measurements of 160,000 meteors by A. Taylor and colleagues, at a New Zealand site, found that about 1% (1500 meteors) struck the atmosphere with velocities greater than 350,000 km/hr. These speedsters must come from beyond the solar system. The question arising is: Whence all this interstellar debris? One hint comes from the fact that the aliens appear to come from the direction in which the sun and its family of planets are traveling through interstellar space. Evidently, this interstellar medium is far from a vacuum; it is strewn with flotsam and jetsam -- but from what smashed planets, moons, and asteroids? (Samson, Alan; "Radar Traps Visitors from Outer Space," Dominion Sun Times (Wellington), April 25, 1993. (Cr. P. Hassall) From Science Frontiers #90, NOV-DEC 1993 . 1993-2000 William R. ...
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... Science Frontiers ONLINE No. 126: Nov-Dec 1999 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects It's All In The Believing Returning to the subject of solar eclipses, it seems that in the past eclipse phenomena have been employed to promote an appealing theory even when the observations were of poor quality. Scientists have been known to "spin" data like politicians! A classic case of scientific "spin" occurred in connection with the total solar eclipse of 1919. British astronomer A. Eddington had mounted expeditions to Sobral, Brazil, and the island of Principe off the west coast of Africa. He had telescopes set up at these two locations to measure the bending of starlight by the sun, as predicted by Einstein's Theory of Relativity. In 1919, Relativity was not yet the cornerstone in the Temple of Science that it is today. Eddington "believed" in Relativity and wished to make it more acceptable. Eclipse photos showing the shifting of star images by the gravitational influence of the eclipsed sun might do the job. On the day of the eclipse, Principe was bedevilled by clouds, and only 2 photographic plates were deemed marginally acceptable. At Sobral, 18 poor plates and 8 better plates were obtained. The problem was that the 18 poor plates yielded a deflection of starlight much smaller than predicted by Relativity, while the 8 better plates produced a much higher value. By adding the 2 plates from Principe to the mix, Eddington managed to come up with a number close to that required by the ...
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... even in the greenhouse effect. Rather, suggest M. M. Grone and M. Sher, the universe-as-a -whole may undergo a phase change. Such an event has already happened once and it may again. Approximately 10-10 seconds after the Big Bang, the force laws changed discontinuously as the universe cooled. Some models of the cosmos predict that another such phase change may occur when photons suddenly acquire mass. Grone and Sher have sketched the effects on terrestrial civilization: "The most dramatic effect would be the elimination of all static electric and magnetic fields over a range greater than 1 cm, and the elimination of all electromagnetic radiation with frequencies smaller than a few hundred gigahertz. We have shown that there would be relatively little impact on atomic structure and on solar radiation. The absence of electrostatic fields would force a redesign of current power plants (to use smaller solenoids); the absence of radio and television waves would force a much greater use of cables. The elimination of solar and geomagnetic fields would have a significant meteorological impact. The potential ly most devastating effect could be on the propagation of neural impulse along motor neurons; it appears that the effects might be small, but they do depend on the precise value of the photon mass." Crone and Sher conclude that the effect would be devastating to humanity but probably not fatal. (Crone, Mary M., and Sher, Marc; "The Environmental Impact of Vacuum Decay," American Journal of Physics, 59:25, 1991.) Comment. No TV; now ...
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... holes, and/or some exotic forms of matter. We must choose between the reality of dark matter or admit that something is awry with our laws of gravitation and motion when they are applied on a cosmological scale Now, let us examine those four darkmatter items from the recent literature: D. Lin, a University of California astronomer, has shown that the Large Magellanic Cloud that orbits around our own galaxy (the Milky Way) is being torn apart (" cannibalized") by the powerful gravitational pull of a dense cloud of dark matter surrounding the Milky Way. This dismemberment of the Large Magellanic Cloud cannot be explained by the gravitational forces exerted by the stars in our galaxy that we can see. Lin calculates that our halo of dark matter is equivalent to 600-800 billion solar masses, compared to the only 100 billion solar masses of visible matter. (Flam, Faye; "Spinning in the Dark," Science, 260:1593, 1993. Also: Anonymous; "' Dark Matter' Is Observed 'Cannibalizing' a Galaxy," Baltimore Sun, p. 8A, June 8, 1993.) The dark matter surrounding a galaxy will, according to the Theory of Relativity, act as a gravitational lens that will deflect light rays passing near it. This dark matter, acting like a telescope, should increase the number of quasars counted in the sky near galactic clusters. Such larger quasar counts are indeed observed, but these increases are much larger than expected. The implication is that there is much more dark matter in the universe than previously ...
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... lock. This has led to speculation that the two planets were once much closer. The most recent measurements of the rotational period of Venus show it to be 243.01 days rather than the 243.16 days for exact resonance. I.I . Shapiro (of MIT) and his colleagues, who made the measurements, wonder whether Venus may be just approaching or just escaping a resonance lock. Whichever the case, the near-resonance is not likely to be a coincidence. (Anonymous; "Venus and Earth: Engaged or Divorced?" Astronomy, 7:58, October 1979.) Comment. If Venus is just escaping resonance lock, how long ago was the lock exact? A few thousand years? And how close were the two planets? Reference. The solar system is full of curious resonances. See ABB4 in our Catalog: The Sun and Solar System Debris. This book is described here . From Science Frontiers #9 , Winter 1979 . 1979-2000 William R. Corliss ...
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... come in three varieties -- electron neutrino, muon neutrino and tau neutrino. And a number of experiments are showing hints that a neutrino has a small mass and that it can oscillate from one variety to another." These experiments are not yet conclusive; and if the neutrino mass is not zero, it hardly weighs more than the grin of a Cheshire cat. But taken together, the laboratory results confirm that neutrinos are perplexing particles. Are they different entities or a single species wearing different costumes? The implications of the recent measurements are far-reaching: Physicists believe that there are a billion neutrinos around for each nucleon (proton, neutron, etc.) so that if neutrinos possess just a hint of mass, they will dominate the mass of the universe; and Measurements of solar neutrinos fall short by a factor of three of what theory says the sun should spew out. This discrepancy could be explained if the solar neutrinos change from electron neutrinos to another form during their flight from the sun to earth, for the terrestrial neutrino detectors measure only electron neutrinos. (Anonymous; "Do Neutrinos Oscillate from One Variety to Another?" Physics Today, 33:17, July 1980.) From Science Frontiers #12, Fall 1980 . 1980-2000 William R. Corliss ...
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... outflow channels" are concentrated in the equatorial regions of Mars. They clearly resemble terrestrial stream beds and have been attributed to water action. The ancient Spokane Flood that carved our Washington State's channeled scablands is seen as an apt terrestrial analogy. The Martian channels, however, are much larger than the water-eroded terrestrial analogs. The authors of the subject paper suggest that ice rather than water created the Martian channels, pointing out that terrestrial ice-stream and glacier landforms are much closer to the Martian features in terms of scale. (Lucchitta, Baerbel K., et al; "Did Ice Streams Carve Martian Outflow Channels?" Nature, 290:759, 1981.) Comment. This suggests the possibility that earth and Mars may have had synchronous Ice Ages due to solar variations or, perhaps, the envelopment of the entire solar system by a huge cloud of absorbing matter. From Science Frontiers #16, Summer 1981 . 1981-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 137: SEP-OCT 2001 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Missing Helium The situation now described is analogous to the saga of the "missing solar neutrinos" mentioned under ASTRONOMY. Here, it is our model of the earth's interior rather than that of the sun that is at risk. There is simply not enough helium escaping from earth's crust to account for the heat flowing outwards from our planet's core. You see, most of the earth's internal fires are fueled by the radioactive decay of uranium and thorium. The heat produced by these disintegrations eventually makes its way to the surface where we can measure it. but the helium (4He) created by the radioactive decay of the uranium and thorium is mostly missing. The discrepancy is large, and scien tists are confronted with the possibility that we are wrong about either the source of the earth's heat or the facts of nuclear physics. You can bet it will not be the latter. We are confident that helium atoms cannot change their type like those solar neutrinos! Neither can we blame chemical sequestration because helium is a noble gas. Perhaps the missing helium is physically trapped and stored somewhere in the earth's mantle. No one knows the answer; nor does any one pay much attention to this clearcut anomaly. (Chin, Gilbert, ed. ; "A Scarcity of Gas," Science, 292:2219, 2001.) From Science Frontiers #137, SEP ...
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... Frontiers ONLINE No. 40: Jul-Aug 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Next Let Us Consider Uranus Uranus is so distant that its satellites are difficult to observe. What astronomers do see is unsettling. The orbital eccentricities of the three inner satellites, using reasonable assumptions about tidal interactions, should decay to zero (perfect circles) in 107 -108 years. If the observational data are correct, one implication is that the Uranian satellite system should be evolving rapidly from a state of higher eccentricity. (Squyres. Steven W., et al; "The Enigma of the Uranian Satellites' Orbital Eccentricities," Icarus, 61:218, 1985.) Comment. Here we have one more sign of recent disturbance or solar-system youth. Time spans of 107 -108 years are very small compared to the estimated solar-system age of 5 x 109 years. From Science Frontiers #40, JUL-AUG 1985 . 1985-2000 William R. Corliss ...
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... -star quakes. If such were so, the bursters would be concentrated in the plane of the galaxy (the Milky Way), which clearly they are not. Another theory places the bursters in a distant spherical halo about our galaxy. But, in this case, the bursters would have to be much more energetic than astronomers care to contemplate. In fact, if they exist in a galactic halo, we should also be able to detect the bursters in our neighboring galaxies -- but we do not! A more exciting suggestion is that gamma-ray bursters are really very close! This would be consistent with the failure to find cosmological redshifts in the burster spectra. Could they be really close, just a few hundred light away? Perhaps arranged in a spherical halo about our solar system in the vicinity of the postulated Oort Cloud of comets? If this were so, they would not have to be nearly as powerful as they would in the neutronstar model. If the gamma-ray bursters really do lurk just at the fringes of the solar system, they must, given their power and small size, be objects completely new to astronomy. (Schwarzschild; Bertram; "Compton Observatory Data Deepen the Gamma Ray Burster Mystery," Physics Today, 45:21, February 1992.) Comment. Historically speaking, the gamma-ray bursters were discovered accidentally by satellites launched to detect surreptitious tests of nuclear weapons. Wouldn't it be ironical if our satellites are really monitoring artificial phenomena, generated by battles we can only write science fiction stories about? Reference ...
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... oceans come from? For decades the stock answer has been: from the condensation of vapors escaping from the planet's cooling crust; that is, "outgassing." The possibility that some terrestrial water might have ar rived from extraterrestrial sources after the earth's formation has been discounted. The major reason behind this neglect was the expectation that the erosive effects of large-scale impacts of water-carrying comets and asteroids would preclude any net accumulation of volatiles, and could even reduce any existing inventories of surface water. C.F . Chyba has recently reexamined this question of cometary water influx vs. impact-caused water losses using the latest estimates of comet/asteroid fluxes during the period between 4.5 and 3.5 billion years ago, when bombardment of the inner solar system was thought to be especially severe. Rather than the expected net loss, Chyba computes that the earth would really have gained more than 0.2 - 0.7 ocean masses in that billion-year period. Venus would have fared equally well, but Mars, more sensitive to impact erosion, would have accreted "only" a layer of water 10-100 meters deep over the whole planet! (This Martian water is now mostly below the surface supposedly.) (Chyba, Christopher F.; "Impact Delivery and Erosion of Planetary Oceans in the Early Inner Solar System," Nature, 343:129, 1990.) Comment. Not mentioned in this paper is what might have happened after 3.5 billion years ago. The comet/asteroid flux did ...
Terms matched: 1 - Score: 24 - 15 May 2017 - URL: /sf068/sf068g12.htm
... . They have created volcanoes and massive basalt flows. They have caused mass extinctions. Of course, for two centuries, other catastrophists have proposed similar dire consequences of giant impacts. But Shaw does introduce three ideas that are worth recording here. Large impact craters occur in swaths. Although this has been suggested before, Shaw has mapped out several swaths where large craters of about the same age are located. His "K -T swath" includes the Chicxulub crater (Yucatan), the Manson crater (Iowa), the Avak crater (Alaska), and three more in Russia -- all of which were gouged out about the time of the Cretaceous-Tertiary (K -T ) boundary. Shaw has plotted several other swaths of different ages. The application of chaos theory to solar system debris. Shaw hypothesizes that nonlinear gravitational effects channel asteroids and comets into the inner solar system in intermittent bursts. The bursts are then captured by the earth and other inner planets, with some of these objects grouped in like orbits. Gravitational feedback occurs from earth to orbiting debris. Shaw believes that the uneven distribution of mass inside the earth -- due probably to the impact that created the moon -- influences where asteroids and comets impact. In turn, these large objects keep smashing into the same regions and their cumulative effect contols the flow of material inside the earth. Then, this change in mass distribution feeds back to change orbits and impact swaths. The above is just a taste of what is revealed in Shaw's book of 600+ pages. It cannot fail ...
Terms matched: 1 - Score: 24 - 15 May 2017 - URL: /sf098/sf098g11.htm
