324 results found.
... formation and motion of bright, luminous bodies surrounded by extended shells and emitting light rays or jets of quaint shapes. The shells transformed and diffused within 10 to 15 minutes. Besides, a more longlived, stable glow was observed, mostly in the northeastern part of the sky. These phenomena took place during disturbances of the geomagnetic field and the upper atmosphere. Somewhere, aurora borealis was seen." (Gindilis, L.M ., and Kolpakov, Yu.K .; "The Petrozavodsk Phenomenon," RIAP Bulletin, 2:3 , April-September 1995. RIAP = Research Institute of Anomalous Phenomena, P.O . Box 4684, 310022 Kharkov-22, UKRAINE) References. The 1913 meteor procession is described in AYO7 in our catalog: The Sun and Solar System Debris. Also see: SF#79. Details on our catalog here . The Petrozavod phenomenon as seen near Lehta. From Science Frontiers #104, MAR-APR 1996 . 1996-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 105: May-Jun 1996 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Mixed-up people Mother-child chimeras. Investigators have discovered cells carrying male DNA among a mother's blood cells 27 years after the birth a male child. Evidently, descendents of fetal cells escape during pregnancy and persist in the mother for years after birth. The mother thus becomes a blend of herself and her child (or, possibly, children) - a kind of chimera. The question is: Why doesn't the mother's immune system destroy these foreign cells? Some scientists speculate that these escaped and still-surviving cells may help explain why women are more susceptible than men to autoimmune diseases. (Travis, J.; "Kids: Getting under Mom's Skin for Decades," Science News, 149:85, 1996) Fatherless blood. In Britain, a male child has been found with normal skin, with each cell carrying the expected X and Y chromosomes, but "his" blood is all female. Its cells contain the mother's two X chromosomes with no paternal contribution. What happened? One theory is that the mother's unfertilized egg spontaneously divided. Then, fertilization occurred, but it was only partial. The sperm got to just one of the two or more cells derived from the egg. The embryo continued to develop but it was part all-mother and part mother-father! "Partial parthenogenesis" seems to be the proper term here ...
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... navigational skills and other aspects of technology long before the rise of the Roman Empire. The Basques, she believes, are the last remnants of the megalith builders, who left behind dolmens, standing stones, and other rock structures all across Europe and perhaps even in eastern North America. Two facts set the Basque peoples apart from the other Europeans who have dominated the continent the past 3,000 years: (1 ) The Basque language is distinctly different; and (2 ) The Basques have the highest recorded level of Rh-negative blood (roughly twice that of most Europeans), as well as substantially lower levels of Type B blood and a higher incidence of Type O blood. Some probable technological feats of the Basques or their ancestors are: Stonehenge and similar megalithic structures oA unique system of measurement based on the number 7 instead of 10, 12, or 60 Regular visits to North America long before Columbus to fish and to trade for beaver skins. Recently unearthed British customs records show large Basque imports of beaver pelts from 1380-1433. The invention of a sophisticated navigational device called an "abacus." (No relation to the common abacus.) (Haddingham, Evan; "Europe's Mystery People," World Monitor , p. 34, September 1992. Cr. A. Rothovius.) From Science Frontiers #85, JAN-FEB 1993 . 1993-2000 William R. Corliss ...
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... few hundred meters apart at Princeton but are light years apart on the matter of parapsychology. The letter writing commenced after Anderson wrote a column in the December 1990 issue of Physics Today entitled "On the Nature of Physical Law." Here he recommended the categorical dismissal of all anomalous observations that might tear apart the fabric of science. Although Anderson did not name Jahn specifically, it was obvious to Jahn that his work was the primary target. Jahn's response was a long letter summarizing the stupendous quantity of data he and his colleagues have amassed on psi effects. "We have in hand several prodigious data bases, acquired over 12 years of continuous, intensive experimentation, that clearly establish the existence, scale and primary correlates of certain anomalous influences of human consciousness on a variety of physical systems and processes. In our Microelectronic Random Binary Generators experiment, 95 selected human operators attempted to shift the output distribution means to either higher or lower values than the chance mean, in accordance with their prerecorded intentions. In 3 850 000 experimental sequences of 200 binary samples, the overall results were that means in high intensity runs exceeded means in low intensity runs by 4.38 sigma. (The probability of chance occurrence of this outcome is less than 6 x 10-6 .) Jahn also reviewed the results of other types of psi experiments which also produced positive results. Replying to Jahn, Anderson admitted that he indeed had Jahn in mind when he wrote his original article. "What my piece actually said was within my competence as a theorist, which is to make logical connections ...
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... Science Frontiers ONLINE No. 80: Mar-Apr 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Archaea: the living ancestors of all life forms Life's place of origin may soon shift from that long-favored "warm little pond" to undersea hydrothermal vents. "Important new discoveries on the properties of the early earth and atmosphere, including the frequency and size of bolide impacts, have strongly implicated submarine hydrothermal vent systems as the likely habitat for the earliest organisms and ecosystems, while stimulating considerable discussion, hypotheses and experiments related to chemical and biochemical evolution. Some of the key questions regarding the origins of life at submarine hydrothermal vent environments are focussed on the effects of temperature on synthesis and stability of organic compounds and the characteristics of the earliest organisms on earth. There is strong molecular and physiological evidence from present-day mircoorganisms that the earliest organisms on earth were capable of growing at high temperatures (about 90 C) and under conditions found in volcanic environments. These 'Archaea', the living ancestors of all life forms, display a variety of strategies for growth and survival at high temperatures, including thermostable enzymes active at temperatures about 140 C. Further molecular and biochemical characterization of the presently cultured thermophiles, as well as future work with the many species, particularly from subsurface crustal environments, not yet isolated in culture, may help resolve some of the important questions regarding the nature of the first organisms that evolved on earth." (Baross, J.A .; "Hyperthermophilic Archaea: Implications for the ...
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... Science Frontiers ONLINE No. 70: Jul-Aug 1990 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects "TAIL WAGS DOG" IN SOLAR SYSTEM The Oort Cloud of comets hovering at the far frontiers of the solar system is, as we know from SF#57, not without its anomalies. Here, let us assume that it really does exist, even though we cannot see it. From a new book by I. Asimov (title below), we learn that this remote haze of icy fluff, the Oort Cloud, may really have about 90% of the angular momentum of the entire solar system. It was already sufficiently anomalous to discover that the planets possess fifty times the angular momentum of the much more massive sun. (See ABB3 in The Sun and Solar System Debris.) Astronomers have been attempting for years to explain this 50:1 split. Now, with the Oort Cloud apparently having ten times the angular momentum of the planets, the situation is much worse. According to Asimov, the solar-system angular momentum is split as follows: Oort Cloud 90% All of the planets 9.8 % The sun 0.2 % The total mass of the Oort Cloud is estimated to be roughly that of Saturn. The recent flyby of Halley's Comet created this dilemma. It was discovered that Halley was a chunk containing 140 cubic miles of ice - much larger than anticipated for this "typical" comet. If the estimated 2 trillion comets are, on the average, Halley' ...
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... Science Frontiers ONLINE No. 69: May-Jun 1990 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Mystery Of The Missing Comets A key feature of our solar system is the Oort Cloud of comets that surrounds the sun and its family of planets. No one has yet seen the Oort Cloud directly, but the textbooks say that it must be there. In fact, all stars like our sun with planetary systems should have their own private Oort Clouds of comets - if the prevailing theory of planetary-system formation is correct. When we see a comet looping around the sun, it is because it has been jostled loose from the Oort Cloud by a passing star or molecular cloud. Further, some of these jostled comets should be kicked outwards and thus escape the solar system. Continuing with this reasoning, we on earth should sometimes see interstellar comets that have been shaken loose from other stellar systems. But we don't ! T.A . McGlynn and R.D . Chapman worry about this. "This lack of detections of extrasolar comets is becoming an embarrassment to the theories of solar system and comet formation." McGlynn and Chapman calculate that we should have seen six interstellar comets in the past 150 years, but the actual number is zero. Such interstellar comets would be easy to spot because they would be moving much faster than our own comets. Two possible explanations for the missing interstellar comets are: (1 ) The Oort Cloud theory is wrong; and (2 ) Solar systems like ours are rarer ...
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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 Wyoming: is old faithful a strange attractor?" Eruptions of Old Faithful Geyser are generally perceived as extremely regular events, with variation of eruptive interval being attributed to random noise. The governing equations for such a hydrothermal system are highly non-linear, therefore it is reasonable to assume that such systems are capable of operating in regines that display chaotic behavior. Three-dimensional state-space reconstruction of eruption time data provides strong evidence of a strange attractor quite similar to the Rossler attractor. Establishing the system as chaotic indicates that while one can predict eruptive intervals in the short term, long term predictions regarding Old Faithful's eruptive behavior are impossible, no matter how carefully and accurately the system is modeled. The mean eruptive interval of Old Faithful has changed over time. This is consistent with the behavior of a chaotic system, which by definition must be nonstationary in the mean. Seismic activity is believed to be a perturbation shifting Old Faithful into a new chaotic state with a different shape to the strange attractor. A simple non-linear dynamic model of geyser behavior is proposed that leads to chaotic behavior and is consistent with the observations of eruption interval data for Old Faithful." (Nicholl, Michael, et al; "Is Old Faithful a Strange Attractor?" Eos, 71:466, 1990.) Comment. "Strange attractor" is a specialized term employed in chaos analysis. So, Old Faithful is ...
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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 The bombardier beetle pulse-jet Creationists have long pointed to the bombardier beetle's jet-like defensive spray mechanism as a device that could not have evolved in many small steps. It must be complete and perfect to work at all. New high-speed photos and related research demonstrate that: "The ejection system of the beetle shows basic similarity to the pulse jet propulsion mechanism of the German V-1 'buzz' bomb of World War II." What the beetle has "evolved" is an intermittent explosive process that fires about 500 pulses per second. The explosive energy comes from the mixing of two separate fluids (hydroquinones and hydrogen peroxide with oxidative enzymes). (Dean, Jeffrey, et al; "Defensive Spray of the Bombardier Beetle: A Biological Pulse Jet," Science, 248:1219, 1990.) Comment. The fundamental question is, of course, how can many, small, random mutations contribute to the development of the mechanisms of the pulse jet, its two fuels, the pumps, the fuel reservoirs, the control system, etc., when only the complete, perfected system has survival value. Although creationists argue that the theories of evolution and natural section are unconvincing here; it is still possible that atheistic factors still beyond our ken are operating, and that what we really need is a better theory of evolution. From Science Frontiers #71, SEP-OCT ...
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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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... All Issues This Issue Sourcebook Project Sourcebook Subjects Cooler heads, bigger brains?When anthropologist D. Falk discovered that an automobile's engine was limited in power by its radiator's capacity to cool it, he applied this thinking to the human brain. The human brain, like the automobile engine, must be kept cool if it is to function well. It follows that if the brain of an animal is not functioning well, the body that brain controls will not perform well either. Overheated brains, then, are sure roads to extinction in the highly competitive natural world. A couple million years ago, two groups of human precursors were competing for dominance in Africa. The group that won and subsequently evolved into Homo sapiens had, according to Falk, a better brain-cooling system. The evolutionary development that probably led to this advantage was a more extensive network of emissary veins, which permitted better dissipation of heat. This, in turn, allowed the evolution of larger brains and dominance by Homo sapiens. Other anthropologists, how ever doubt that such a minor change in the circulatory system could account for the emergence of modern man. (Shipman, Pat; "Hotheads," Discover, 12:18, April 1991.) Comment. What an intriguing concept! Perhaps human male baldness also confers more cooling efficiency and is setting the stage for a new expansion of the human brain -- at least the male brain, sorry girls! More seriously, did the better blood cooling system develop in response to an enlarging brain, or vice versa? Even more ...
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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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... 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 not ...
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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 Drip, drop, drup, dr**A dripping faucet is usually conceived as a well-ordered dependable phenomenon. You simple turn the faucet a bit counterclockwise and the drip rate increases. It's so simple. Surprise! Dripping faucets are chaotic systems, as described in the following Abstract: "The dripping water faucet is a simple system which is shown in this article to be rich in examples of chaotic behavior. Data were taken for a wide range of drip rates for two different faucet nozzles and plotted as discrete time maps. Different routes to chaos, bifurcation and intermittency, are demonstrated for the different nozzles. Examples of period-1 , - 2, -3 , and -4 attractors, as well as strange attractors, are presented and correlated to the formation of drops leaving the faucet." (Dreyer, K., and Hickey, F.R .; "The Route to Chaos in a Dripping Water Faucet," American Journal of Physics, 59:619, 1991.) Comment. O.K ., so faucets dribble a bit. From Science Frontiers #77, SEP-OCT 1991 . 1991-2000 William R. Corliss ...
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... in wheatfields, but there were some reports from fields of barley, rapeseed, linseed, and long grass grown for silage. In 1990, as in 1989, Wiltshire dominated the British scene with about 70% of the year's total. This year the leading counties were Wiltshire: over 400; Hampshire: over 50; Norfolk: 18; Devon: 17; Sussex: 16; Oxfordshire: 13; Buckinghamshire: 12; and so on." In his review of the 1990 phenomena, G.T . Meaden dwelt on the Hampshire dumbbell formations. From these many spectacular "circles" we focus on the one at Seven Barrows, Hampshire. Two of the 1990 Hampshire dumbell formations. (L ) Near Seven Barrows; (R ) Near Morestead. "The next system [see figure] was at Seven Barrows, north of Litchfield, Hampshire near the A34 highway to Newbury. On the evening of 22 June I pointed out this featureless field to conference members as we drove past following our circles tour, saying that this was a 'repeater' region for circles events (circles are known for these fields for 1976, 1978, 1981, 1983 and 1985). The next morning, the day of the conference, attendees travelling north from Hampshire to Oxford spotted the formation which had appeared overnight. The circles were a hundred metres from a group of Bronze Age barrows which had been there for over three thousand years." CERES is the Circles Effect Research Group, operated by G.T . Meaden, who is also the Editor of the Journal ...
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... Science Frontiers ONLINE No. 66: Nov-Dec 1989 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The babirusa: a quasi-ruminant pig The babirusa, an inhabitant of Indonesia, looks like a thin pig, but its stomach is like that of a sheep, which is a "simple" ruminant. The babirusa's stomach possesses an extra sac; and the animal often browses on leaves and shoots. It does not, however, chew a cud. The Indonesian babirusa, a pig-like animal with curious tusks and an unusual digestive system (for a pig). Taxonomists are a bit puzzled over the babirusa. They aren't sure whether its closest relatives are modern pigs, peccaries, or hippos. The babirusa's "tusks" pose more questions about its evolution: "The creature's oddest characteristic is the two impressive pairs of curving tusks grown by the males. One pair are simply extended lower canines, but the second are actually upper canines, the sockets of which have rotated, resulting in tusks that grow through the top of the muzzle and emerge from the middle of the animals's face. The effect is bizarre and startling. The males fight with their dagger-like lower canines and probably deflect opponents' blows with the upper set, thus protecting their eyes. Indonesians say the tusks are similar to deer antlers, giving the babirusa its name, which means 'pig deer.'" (Rice, Ellen K.; "The Babirusa: A Most Unusual ...
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... Interference And Luminescence March 8/9 , 1989. Arabian Sea. m.v . British Esk "During the night a particularly strong and distinct patch of radar interference was noted by all observing officers. The sketch shows the phenomenon as seen on the 12-n .mile range of the 3-cm radar. The racon type mark varied in length from 1-3 n.miles at a nearest range of 5-10 n.miles. The effect was minimal on the 10-cm radar. "The bearing of the mark remained fairly constant at about 20 abaft the port beam or about 230 . Of particular note was that around 1600 GMT to 1700 GMT (about 2 hours after sunset), when the mark on the radar was very distinct, the satellite communication system suffered a loss in signal strength sufficient to prevent transmission or reception, the bearing of the satellite being almost due south of the vessel. It was thought at the time that the signal mast had become aligned between the aerial and the satellite, but alteration of the ship's head to port or starboard did not cure the low signal strength. .. .. . "Of note, although this may have been a coincidence only, was that the vessel was passing through patches of bioluminescence at the time, mostly only bright enough to show up in the breaking waves of the ship's wake, but during the period of low signal strength, the whole area of white, foamy water along the ship's side frequently shone a bright greenish colour." (St ...
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... Science Frontiers ONLINE No. 76: Jul-Aug 1991 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Will earth's rings return?" In the past, the Earth had a ring system just like Saturn, Uranus and Neptune, according to a Danish astronomer. He has gone so far as to say that our planet boasted rings on 16 separate occasions in the past 2800 years. "Kaare Rasmussen of the National Museum in Copenhagen carried out a survey of all reports of meteorite falls, fireballs and showers of shooting stars from 800 BC to 1750 AD. He then carried out a statistical analysis of the data. He discovered that there were many distinct periods of intense activity." Rasmussen found that the active periods, during which he believes a ring existed about the earth, began with a peak of high meteoritic activity as the ring formed, as a consequence of the earth's capture of a comet or asteroid. This was typically followed by a decrease of activity indicating ring stability. Finally, the ring broke up as its particles were decelerated by the earth's upper atmosphere, leading to another peak of activity. Thus, the plot of me-teorite activity is U-shaped, as in the figure, with the bottom of the U a bit higher than the normal background. (Gribbin, John; "Will the Earth's Rings Return?" New Scientist, p. 19, April 6, 1991.) From Science Frontiers #76, JUL-AUG 1991 . 1991- ...
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... Science Frontiers ONLINE No. 76: Jul-Aug 1991 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects An ancient egyptian ship in australia?The illustration, right, was taken from a newspaper, The Australian . It is a computer-enhancement of a badly faded painting found on Booby Island off the coast of Australia. R. Coleman, the Queensland Museum's curator of Maritime History and Archaeology, was quoted in the paper as saying: "Using this technique we are able to selectively neutralize confusing background virtually making the original image pop out of the background...this system... will add tremendously to our knowledge of those cultures prior to European set tlement." (Anonymous; "An Ancient Egyptian Ship in Australia?" Epigraphic Society, Occasional Papers , 19:211, 1990.) Comment. The vessel in the sketch does seem to have Egyptian lines. However, as our friends in Australia often remind us, we must be wary of what we read in Australian newspapers. From Science Frontiers #76, JUL-AUG 1991 . 1991-2000 William R. Corliss ...
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... structure of the alleged 'aliens' is not likely to have originated on another planet and is not biologically adapted to space travel; (3 ) The reported behavior in thousands of abduction reports contradicts the hypothesis of genetic or scientific experimentation on humans by an advanced race; (4 ) The extension of the phenomenon throughout recorded history demonstrates that UFOs are not a contemporary phenomenon; and (5 ) The apparent ability of UFOs to manipulate space and time suggests radically different and richer alternatives." If not extraterrestrial hardware, what are the UFOs? Vallee has three suggestions: (1 ) they are "earth lights" a la P. Devereux; that is, an unappreciated terrestrial phenomenon that impresses mental images on the minds of observers; (2 ) They are artifacts of a "control system" operated by a nonhuman intelligence or, perhaps, a Gaia like manifestation of supernature (of which we are a tiny part) that is trying to modify our behavior; and (3 ) They are apparitions caused by entities ma nipulating space and time; viz,. time travellers from our own past and/or future. (Vallee, Jacques F.; "Five Arguments against the Extraterrestrial Origin of Unidentified Flying Objects," Journal of Scientific Exploration, 4:105, 1990.) From Science Frontiers #73, JAN-FEB 1991 . 1991-2000 William R. Corliss ...
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... . D3; 823, 1971. See also: Decrypting the Eclipse at http://www.science.nasa.gov/newhome/headlines/ast06aug99_1 .htm . Comment. Such observations are naturally hard to accept. The result obtained by Allais (1954) concerning the shift of the oscillation plane of the pendulum during eclipse was observed again by G. Jeverdan in 1961 and then later in 1970 was observed again by Allen and Saxl (1971). Moreover, in 1961, Jeverdan also observed an decrease of the medium value for the period of the Foucault pendulum during the eclipse, and therefore an increase in the gravitational acceleration, not reported before by Allais in his work from 1954. Details may be found in ASX6 in our catalog: The Sun and Solar System Debris. Ordering information here . From Science Frontiers #74, MAR-APR 1991 . 1991-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 72: Nov-Dec 1990 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Upwardly directed lightning from cloud tops "An image of an unusual luminous electrical discharge over a thunderstorm 250 kilometers from the observing site has been obtained with a low-light-level television camera. The discharge began at the cloud tops at 14 kilometers and extended into the clear air 20 kilometers higher. The image, which had a duration of less than 30 milliseconds, resembled two jets or fountains and was probably caused by two localized electric charge concentrations at the cloud tops." (Franz, R.C ., et al; "Television Image of a Large Upward Electrical Discharge above a Thunderstorm System," Science, 249:48, 1990.) Comment. Note that the above discharges were diffuse and quite unlike most cloud-to-ground lightning discharges. They were, in fact, much like the mountain-top glows seen along the Andes. Also, one should ask where those "localized electric charge concen trations" came from and why they did not disperse. Reference, Upwardly directed "rocket lightning" is cataloged in GLL1 in our catalog: Lightning, Auroras. Fuller description here . From Science Frontiers #72, NOV-DEC 1990 . 1990-2000 William R. Corliss ...
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... Sep-Oct 1991 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects No unknown monsters in those fiji underwater caves: nevertheless, the mystery deepens A videotape of those unusual skeletons in the Fiji underwater caves mentioned above has been studied by scientists at the Queensland Museum. The are not the remains of unknown monsters -- they are only dolphin bones! But one mystery has been replaced by several. It seems that there were three different species of dolphins, and they were found at the closed ends of underwater passages that were just a bit larger than the living animals themselves. Why did three different species go into the caves at all? Why did they go all the way to the ends of the closed passages, given their excellent echo-location systems? Pertinent here is the discovery of skeletons and recent carcasses of green turtles in similar situations in underwater caves in Indonesia. Turtles lack the dolphins' echo-location equipment, but they are still excellent navigators. (Molnar, R.E .; personal communication, July 2, 1991. Molnar is a scientist at the Queensland Museum.) Comment. Another question comes to mind: Could the demise of the dolphins in the Fiji caves be related to the occasional strandings of whales and other cetacea on beaches all over the world? Is there a common failure in perception and/or navigation? From Science Frontiers #77, SEP-OCT 1991 . 1991-2000 William R. Corliss ...
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... Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Crop circles: daisy patterns and a red ball of light G.T . Meaden, in the second installment of his review of 1990 crop-circle research, singled out for special attention the so-called "daisy patterns." While these are not as intricate and mysterious as the spectacular nine-circle complex at Alton Barnes, the formation of one of the daisy patterns may have been accompanied by luminous phenomena. "Circles in a daisy pattern were reported from Devonshire and Somerset County: the first a centre circle with seven regular satellites, evenly spaced, from Bickington in June; the second a circle with six similar satellites from Butleigh Wootton, near Glastonbury in mid-July. "A third daisy-pattern system, one with ten ringed satellites surrounding a central ringed circle, turned up at the end of July in East Anglia. This last was formed on the night of 30-31 July, possibly in the late evening of 30 July at the time of the observation of a glowing ball of red light. It was seen by the farmer shining above his field at Hopton as viewed from his house on the edge of Gorleston (Norfolk). 'He looked at it through his binoculars and described it as a red central glow with a thinner red outer ring...By the time he had passed the binoculars to his son the thing had gone'" ( Eastern Daily Press ). (Meaden, G.T .; "Major Developments in Crop-Circle Research in ...
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... Science Frontiers ONLINE No. 73: Jan-Feb 1991 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Killer Trees That Talk Among Themselves "Acacia trees pass on an 'alarm signal' to other trees when antelope browse on their leaves, according to a zoologist from Pretoria University. Wouter Van Hoven says that acacias nibbled by antelope produce leaf tannin in quantities lethal to the brows ers, and emit ethylene into the air which can travel up to 50 yards. The ethylene warns other trees of impending danger, which then step up their own production of leaf tannin within just five to ten minutes." (Hughes, Sylvia; "Antelope Activate the Acacia's Alarm System," New Scientist, p. 19, September 29, 1990.) Free-ranging antelope can always find unwarned acacias with low levels of tannin to browse on, but on some South African game ranges, they are forced to consume high tannin leaves. Too much tannin inactivates the antelopes' liver enzymes, and they die in about two weeks. Hundreds may perish in a very dry season. (Vincent, Catherine; "Les Arbres Communiquent entre Eux," Le Monde , p. 11, September 14, 1990. Cr. C. Mauge) From Science Frontiers #73, JAN-FEB 1991 . 1991-2000 William R. Corliss ...
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... of biogenic minerals. It turns out that biogenic minerals are quite common - so common, in fact, that the Gaia concept is recalled, in which biological processes preside over much that happens upon this planet. Here follows a sampler of some biogenic minerals: Much, if not all, travertine (calcite and/or aragonite) and silicious sinter (opal) are deposited through algal action. Much pyrite and marcasite in sedimentary rocks comes from bacterial sulfate reduction. Bacterial breakdown of oil produces organic complexes that dissolve, transport, and precipitate quartz. The reknowned Herkimer "diamonds" may be of biological origin. Living cells synthesize isometric crystals of magnetite. Mitochondria manufacture crystals of hydroxylapatite. Better known are the apatite in bones and teeth and the aragonite, calcite, or fluorite in the vestibular systems of vertebrates. (Dietrich, R.V ., and Chamberlain, Steven C.; "Are Cultured Pearls Mineral?" Rocks and Minerals , 64:386, September/October 1989. Cr. R. Calais) From Science Frontiers #66, NOV-DEC 1989 . 1989-2000 William R. Corliss ...
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... an aircraft, Morisette pulled off the road and got out. To his surprise, it was a formation of five or six meteors cruising leisurely toward the north on parallel paths. This fascinating spectacle lasted about 15-20 seconds -- long as meteor events go. The fireballs disappeared simultaneously. No sounds were heard during or after their passage. (Morisette, Gartan; "Escadrille de Meteores," Astronomie-Quebec , July-August 1991. Cr. F. St. Laurent) Comment. The slow progress and disciplined motion of the Quebec meteors remind one of the famous meteor procession of February 9, 1913, which was also a predominantly Canadian event. However, the 1913 procession headed southeast over the northeastern states and out into the Atlantic. See AYO7 in Sun and Solar System Debris. This catalog volume is described here . From Science Frontiers #79, JAN-FEB 1992 . 1992-2000 William R. Corliss ...
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... All Issues This Issue Sourcebook Project Sourcebook Subjects Direct observations of hyperion's chaotic motion Hyperion is a 150-kilometer-diameter satellite of Saturn. Hyperion's irregular shape and the gravitational pull of Titan, a larger satellite of Saturn, make it a prime candidate for chaotic motion. After accumulating 53 Hyperion-days of observation, J. Klavetter has confirmed this theoretical suspicion. Hyperion's brightness varies wildly from day to day, as it spins unpredictably. The laws of motion and the largest computers are helpless here; although computer simulation can identify situations where chaos might develop. More alarmingly, some "subtle" chaos also appears in computer simulations of Pluto's motion and "perhaps other planets." (Kerr, Richard A.; "First Direct View of Solar System Chaos," Science, 246: 998, 1989.) Comment. Contemplate what might happen -- or might have happened already -- if any of the other planets moved chaotically. From Science Frontiers #67, JAN-FEB 1990 . 1990-2000 William R. Corliss ...
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... ; and the young geological age of the tektites is dismissed as erroneous. A Soviet scientist, E.P . Izokh, has recently proposed a radically different scenario that would produce both the young and old dates. If a moon, or Jupiter, or some similar body, explosively ejected the glassy tektites, embedded in an icy cometary body some 700,000 years ago, the tektites could, after cruising through space for millenia, have fallen to earth recently and over a wide area. Thus, both geologists and geophysicists would be satisfied! (Sullivan, Walter; "New Answer Proposed for Tektites: A Comet," New York Times, November 28, 1989. Cr. R. Adams) Comment. Russian scientists have long suggested that comets may be ejected from solar-system bodies and have been laughed at by American scientists for their trouble! Reference. For more on tektite anomalies, refer to category ESM3 in our catalog: Neglected Geological Anomalies. Ordering information here . An Ablation-sculpted australite, one type of Australian tektite. From Science Frontiers #67, JAN-FEB 1990 . 1990-2000 William R. Corliss ...
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... . Joseph and Grand Rivers, where they occupied the most fertile of the prairie land and burr-oak plains, principally in the counties of St. Joseph, Cass and Kalamazoo. "They consisted of raised patches of ground, separated by sunken paths, and were generally arranged in plats or blocks of parallel beds. These varied in dimensions, being from five to sixteen feet in width, in length from twelve to more than one hundred feet, and in height from six to eighteen inches. "The tough sod of the prairie had preserved very sharply all the outlines. According to universal testimony, these beds were laid out and fashioned with skill, order and symetry which distinguished them from the ordinary operations of agriculture, and were combined with some peculiar features that belong to no recognized system of horticultural art." Type 8. Wheel-shaped plats. Width of beds, 6-20 feet; paths, 1 foot; length, 14-20 feet. Hubbard recognized eight types of beds. Two of these are illustrated and described right. Hubbard gave no figure for the total extent of the beds. Individual plats ran from 20 to 300 acres. Considering that they stretched for miles through three counties, we are certainly talking about thousands of acres. Hubbard stated that the usual pottery, arrowheads, spear points, and related artifacts seemed to be absent from the areas of the beds. (Hubbard, Bela; "Ancient Garden Beds of Michigan," American Antiquarian, 1:1 , 1878. Reprinted in : INFO Journal, 12:6 , no ...
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... the use of the word "spontaneous" without philosophical comment. The stimuli for the research described are such observations as: (1 ) life exists; (2 ) life evolves; (3 ) the fossil record displays stasis, extinctions, and great gaps between phyla and lesser classifications; and (4 ) disordered molecules move smoothly and surely into the order manifest in the living cell. The question asked in the article is whether science has missed something in its description of the origin and development of life. Just what makes molecules coalesce into cells and humans? The answer given is: spontaneous self-organization ! In other words, there is no guiding external force. Molecules do this spontaneously. There are even computer models being developed, based on a branch of mathematics called "dynamical systems," that describe how this all happens - spontaneously, of course. (Waldrop, M. Mitchell; "Spontaneous Order, Evolution, and Life," Science, 247:1543, 1990.) Comment. When water molecules spontaneously cluster together to form a snowflake, with all its symmetry and order, science explains the process in terms of the properties of water molecules. The same must be true when molecules merge to form life forms. But why do atoms and molecules possess these properties that lead to bacteria, to humans, to who-knows-what's -next? "Spontaneous self-organization" is a cop out! From Science Frontiers #69, MAY-JUN 1990 . 1990-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 76: Jul-Aug 1991 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Catastrophic flooding on mars?Could that parched red planet seen in the Viking pictures have been the site of a colossal flood -- a wall of water greater than anything ever seen on earth? Terrestrial geologists point to the Channeled Scablands in eastern Washington State as evidence of what the sudden release of a huge lake's water can do to the landscape. Everywhere in this part of Washington are deeply incised grooves and dry cataracts separated by water-streamlined bars. Exactly this sort of harsh, scoured topography can be found at Kasei Valles, Mars. "The upper part of the channel system is typically less than 1 km deep and descends from Echus Chasma about 1 km over a distance of 1000 km; it then splits into north and south channels. On the basis of a stereomodel of Viking images, we have measured the geometry of a steep, constricted reach of the north channel that drops 900 m in only 100 km. A late-stage flood is hypothesized to have scoured the channel. If we assume that channel striations indicate water levels, then the flood had a minimum cross-sectional area of 3.12 x 107 m2 (the putative flood had a width of 83 km, an average depth of 373 m, and a maximum depth of 1280 m). These channel measurements suggest that flood vel ocities ranged from 32 to 75 m. s-1 and that discharge was greater than 1 km3 ...
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... s measurements, the mixing-cooling theory is in trouble. The magnetic-field situation is in even worse shape. When planetary scientists found that Uranus' magnetic field was tilted 60 from the axis of rotation, they worried a bit but didn't think that this one exception would overthrow the favored dynamo theory of field generation. After all, the magnetic fields of Jupiter, Saturn, and earth are reasonably well-behaved. But Neptune's field is now found to be misaligned by 50 ! The confidence of the planetologists has now been shaken. What, if anything, is different about Neptune and Uranus? It may just be that we don't really know how the magnetic field of any planet is generated. (Kerr, Richard A.; "The Neptune System in Voyager's Afterglow," Science, 245:1450, 1989.) Reference. The anomalies of Neptune and the other planets are cataloged in our book: The Moon and the Planets. To order, visit: here . From Science Frontiers #66, NOV-DEC 1989 . 1989-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 66: Nov-Dec 1989 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Memory Structure Of Autistic Idiot Savants The first two paragraphs of this study by N. O'Connor and B. Hermelin provide some interesting background concerning the idiot savant phenomenon. "There are two basic questions which arise from the phenomenon of the idiotsavant. One is whether the specific memory of the idiot-savant is categorically organized or not and the second is whether this memory is IQ independent or IQ related. The first problem needing consideration is therefore concerned with the nature of the memory system which is involved. In the idiot-savant this has, until recently, been deemed to be a relatively unorganized rote memory. It is supposed to be mechanical, inflexible and extremely concrete. However, in a number of studies we have demonstrated that the outstanding memories of idiotsavant calculators and musicians are founded on strategies which are rule based, and which draw on a knowledge of the structure of the calendar or of music. "In addition to evidence concerning the organized nature of the specific memories of idiot-savants for dates and music, we have also accumulated evidence that the eliciting of rules and the development of rule-based strategies tended to be specific in the particular areas of ability of these subjects. For example, although able to calculate past and future dates rapidly, calendrical calculators were often quite poor in the addition and subtraction of numbers unrelated to the calendar. Similarly, in one experiment, musical memory in an idiot- ...
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... .) Comment. Of the 75 craters mapped so far by Magellan , only one shows any signs of aging; i.e ., tectonic movements, lava-filling, etc. The surface of Venus should be hundreds of millions of years old, yet it looks freshly minted. The anticipated spectrum of degradation has not yet been seen. One theory is that recent lava flooding erased the old craters, and we now see only recent impact scars. But why would a planet's volcanism turn off so completely and so abruptly? Our earth, Venus' sister planet in many ways, still perks away, leaving craters of various ages. Why is Venus so different? One idea not advanced by Kerr in Science is that Venus might be a recently acquired member of the solar system! From Science Frontiers #73, JAN-FEB 1991 . 1991-2000 William R. Corliss ...
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... not all, residents of the British Isles. Percipients describe the hum as like a "diesel truck with its engine idling." The electronic environment of Britain has been blamed for the hum: transformers, high-voltage transmission lines, and pulsed radars are all candidate hum-makers. For, it has been discovered, some people somehow convert pulses of electromagnetic energy into a perception of sound. This facet of the British "hum problem" was covered on p.000, where the infamous Soviet "Woodpecker Radar" is mentioned specifically. But are electromagnetic pulses really to blame? The British hum has become a nuisance - to those who can hear it - during the past 20 years. This is just the period during which British Gas has been installing a nationwide gas-distribution system, which employs powerful turbines to pump natural gas through underground pipelines. H. Witherington, an unhappy hum-hearer, has for years driven around Britain at night when things are quieter, plotting places where the hum can be heard. He has found that the sound follows the gas pipelines and extends for several kilometers on each side. Houses, he finds, tend to amplify the sound, because closed rooms sometimes create resonant conditions. (Fox, Barry; "Low-Frequency 'Hum' May Permeate the Environment," New Scientist, p. 27, December 9, 1989.) Reference. Ordering information for our catalog (mentioned above): Earthquakes, Tides may be found here . From Science Frontiers #68, MAR-APR 1990 . 1990-2000 William ...
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... 73: Jan-Feb 1991 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Things that ain't so Back in 1953. Irving Langmuir, the famous American physicist, gave a talk at General Electric on the subject of "pathological science." He discussed several things that could not be so . Of course, UFOs were on the list, but so was mitogenetic radiation -- radiation supposedly emitted by cells when they divide. In the context of Langmuir's talk, despite his emphatic interment of the subject, mitogenetic radiation was resurrected recently in the pages of Physics Today. A letter from V.B . Shirley included several recent scientific references that suggest that Langmuir was premature. "The gist of these articles is that many cell systems emit ultraviolet light during or immediately before cell division and that the total effect of this emission on neighboring cells is unknown." (Shirley, Vestel B.; "Mitogenetic Radiation: Pathology or Biology?" Physics Today, 43:130, October 1990.) From Science Frontiers #73, JAN-FEB 1991 . 1991-2000 William R. Corliss ...
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... February 18, 1990. Northeastern U.S . "Reports of a fireball that blazed through the skies over the Northeast on Sunday, changing colors and even executing a fiery loop before vanishing, have been filtering into local agencies, a Museum of Science official said yesterday. "Observers from Nova Scotia to New Jersey reported the spectacular fireball, which they said was visible for more than 10 seconds at 7:30 p.m . Sunday in the southeastern sky." (Saltus, Richard; "Looping Fireball Dazzled Observers in Northeast," Boston Globe, February 23, 1990. Cr. B. Greenwood.) Comment. Fireballs and meteors do not normally execute loops. Reference. The anomalies of meteors in flight are cataloged in AYO in the catalog: The Sun and Solar System Debris. For ordering information, visit: here . From Science Frontiers #69, MAY-JUN 1990 . 1990-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 58: Jul-Aug 1988 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Chaotic Dynamics In The Solar System The following abstract appeared in a 1988 issue of Eos, a weekly publication of the American Geophysical Union. "Newton's equations have chaotic solutions as well as regular solutions. The solar system is generally perceived as evolving with clockwork regularity, yet there are several physical situations in the solar system where chaotic solutions of Newton's equations play an important role. There are physical examples of both chaotic rotation and chaotic orbital evolution. "Saturn's satellite Hyperion is currently tumbling chaotically, its rotation and spin axis orientation undergo significant irregular variations on a time scale of only a couple of orbit periods. Many other satellites in the solar system have had chaotic rotations in the past. It is not possible to tidally evolve into a synchronous rotation without passing through a chaotic zone. For irregularly shaped satellites this chaotic zone is attitude-unstable and chaotic tumbling ensues. This episode of chaotic tumbling probably lasts on the order of the tidal despinning timescale. For example, the Martian satellites Phobos and Deimos tumbled before they were captured into synchronous rotation for a time interval on the order of 10 million years and 100 million years, respectively. This episode of chaotic tumbling could have had a significant effect on the orbital histories of these satellites." Theis abstract continues, naming as other candidates for chaotic histories: some of the asteroids, Miranda (a satellite of Uranus), and the planet Pluto. ...
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... Science Frontiers ONLINE No. 64: Jul-Aug 1989 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Halley: a young, combusting, alien interloper Can this be the comet Halley of the textbooks? Comets are supposed to be as old as the solar system itself (4 .6 billion years), born of solar-system stuff when a gaseous cloud condensed. Above all, comets do not "burn" or combust! The vision of a "burning" comet was advanced by recent observations that the velocity and temperature of the gases escaping from Halley are higher than one would expect from the sublimation of ices under solar radiation. Also, the concentration of expelled material in large, hypersonic jets carrying large quantities of fine dust further undermine the sublimation model. E.M . Drobyshevski has concluded "The new observations, together with some earlier data still poorly understood (e .g ., the appearance in the coma of large amounts of C3 ) can be accounted for by assuming the cometary ices to contain, apart from the hydrocarbons, nitrogen-containing compounds, etc., also of free oxygen (about 15 wt. %) . Under these conditions, burning should occur in the products of sublimation under deficiency of oxidizer accompanied by the production of 'soot,' 'smoke,' etc. The burning should propagate under the surface crust and localize at a few sites. "The presence of oxygen in cometary ices follows from a new eruption theory assuming the minor bodies of the Solar System to have formed ...
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... Science Frontiers ONLINE No. 55: Jan-Feb 1988 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Cyclothems as solar-system pulse recorders Geologists can help astronomers look back in time. The sunspot cycle can be seen in variations of varves; i.e ., annual layers of sediment; and the growth rings of shells have been used to estimate the number of days in the lunar month when the solar system was younger. Cyclothems may also be useful. Cyclothems are groups or bundles of strata that repeat themselves in stratigraphic columns. A generalized cyclothem from Illinois is shown in the illustration. In the U.S . western interior, rhythmic sedimentation appears in the Fort Hays Limestone Member of the Niobrara Formation. These cyclothems can be correlated over distances exceeding 800 kilometers and are believed to be the consequence of climatic changes associated with the earth's precession and orbital eccentriciy. These rhythms have been captured in bundles of shale-limestone couplets. A bundle of five coup lets, for example, is thought to express 21,000- and 100,000-year Milankovitchtype climatic cycles, as impressed by variations in the earth's orbital precession and eccentricity. Analysis of the Fort Hays Limestone Member, however, reveals that while bundles of five couplets do occur, the number may vary from 1 to 12. Clearly, things are not clear-cut. (Laferriere, Alan P., et al; "Effects of Climate, Tectonics, and Sea-Level Changes on Rhythmic Bedding Patterns in the Niobrara Formation ...
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... Science Frontiers ONLINE No. 63: May-Jun 1989 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Planets Are Unpredictable It was only about 40 years ago when astronomers, aghast at Velikovsky's vision of worlds in collision, stated very firmly that the solar system was presently stable and had been so for eons. Now it seems that they may have been a bit hasty and all-encompassing. Not that the Velikovsky scenario is correct or that Mars might at any moment depart from its present orbit, but rather that astronomers must now admit an inability to predict planetary motion over billions of years - even tens of millions of years! For the solar system, if those ubiquitous computers are correct, is not a well-behaved family of planets. J. Laskar concludes from extensive numerical experiments: "The motion of the Solar System is thus shown to be chaotic, not quasiperiodic. In particular, predictability of the orbits of the inner planets, including the Earth, is lost with a few tens of millions of years." (Laskar, J.; "A Numerical Experiment on the Chaotic Behavior of the Solar System," Nature, 338:237, 1989.) Comment. Laskar's comments are directed toward the future, but the same conclusions should apply if we ran the solar system backwards in time. From this very narrow perspective of celestial mechanics, one cannot say positively that the planets, the inner ones especially, could not have radically altered their orbits within the past few millions of ...
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... Science Frontiers ONLINE No. 58: Jul-Aug 1988 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Is the earth seeding the rest of the solar system?We begin with the lead paragraph from a recent letter to Nature from H.J . Melosh; "Recent evidence that the SNC meteorites originated on Mars raises the question of whether large impacts on Earth may eject rocks that could fall on Mars (or other planets in the Solar System) and, if so whether they might contain spores or some sort of viable microorganisms that would have the opportunity to colonize Mars." After some computations Melosh concludes: "It seems likely that the impacts that produced craters on Earth that are greater than 100 km in diameter would each have ejected millions of tons of near-surface rocks carrying viable microorganisms into interplanetary space, much in the form of boulders large enough to shield those organisms from ultraviolet radiation, low-energy cosmic rays, and even galactic cosmic rays. Under such circumstances spores might remain viable for long periods of time." (Melosh, H.J .; "The Rocky Road to Panspermia," Nature, 332:687, 1988.) Comment. Next we need a reasonable mechanism that spreads life through interstellar space. Light pressure, that's it; and the idea is over a century old! Incidentally, SNC is short for Shergottites, Nakhalites, Chassignites; all rare classes of meteorites. From Science Frontiers #58, JUL-AUG 1988 . 1988-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 57: May-Jun 1988 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A NEARBY RING OF COMETS?Some 589 long-period comets are known. They ply orbits around the sun that may take millions of years to complete. Astronomers are generally agreed that these bodies originate in a very distant (100,000 A.U .* ) halo of cometary material surrounding the entire solar system. J. Oort proposed this cloud, and it is named after him. Of course, we anomalists become wary when scientists "generally agree" on a hypothetical entity that no one can see. The Oort Cloud of comets, like the unseeable black holes, are given substance only by the effects they have on other solar-system denizens and seeable cosmic objects. But there may be another cloud of comets that we can view directly. It is called the Kuiper Cloud (after G. Kui per). It is concentrated in the plane of the ecliptic just beyond the orbit of Neptune. Like the Oort Cloud, the Kuiper Cloud has not been seen yet, but we just might be able to with today's equipment! Its existence is hypothesized from the parameters of a different group of comets -- the so-called "short-period" comets, as exemplified by 76-year Halley's Comet. About 120 short-period comets have been discerned so far; and our computers now tell us that they cannot have originated in the Oort Cloud. Something closer and concentrated ...
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... captured by the earth's gravitational field. Some of these would fall to earth; others would remain in orbit. Now, the reverse scenario has been investigated numerically. S.A . Phinney and colleagues at the University of Arizona have calculated what would happen to small chunks of the earth's crust if a large meteor impact excavated a 60milewide crater. "Phinney's group used a computer to calculate where 1,000 particles would go if ejected from Earth in random directions, moving about 2.5 kilometers per second faster than the minimum speed necessary to escape. Of the 1,000 hypothetical particles, 291 hit Venus and 165 returned to Earth; 20 went to Mercury, 17 to Mars, 14 to Jupiter and 1 to Saturn. Another 492 left the solar system completely, primarily due to gravitational close encounters with either Jupiter or Mercury that 'slingshot' them on their way." (Eberhart, Jonathan; "Have Earth Rocks Gone to Mars?" Science News, 135:191, 1989.) Comment. One implication from the preceding analysis is that terrestrial bacteria and spores could well have infected every planet in the solar system and perhaps even planets in nearby star systems! Conceivably, if other star systems had histories like ours, biological traffic might be quite heavy in interstellar space. In fact, extraterrestrial life forms may be arriving here continually; and we may be such ourselves! From Science Frontiers #63, MAY-JUN 1989 . 1989-2000 William R. Corliss ...
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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 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 is described here . In C. Patterson's model the outer planets ...
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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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... , 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 weakens the ...
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... iron, the H-chondrites, they find that the meteorites' ages do not spread evenly through time. Instead, the ages seem to cluster at 7 and 30 million years." Astronomers have hitherto been content to attribute these clumped ages to collisions among the meteorites' parent bodies - the asteroids - which ply periodic orbits. However, S. Perlmutter and R.A . Muller, at Berkeley, point to the apparent 26- to 30-million-year periodicities of three terrestrial phenomena: Biological extinctions in the fossil record, Magnetic field reversals, and Terrestrial-crater ages. Could there be a connection between the clumped meteorite ages and these terrestrial phenomena? Perlmutter and Muller propose that all of these phenomena are the consequence of periodic storms of comets that invade the inner solar system from the direction of the Oort Cloud of comets that purportedly hovers at the fringe of the solar system. These comets not only devastate the earth but also collide with the asteroids, knocking off those bits and pieces we call meteorites. (Anonymous; "Do Meteorite Ages Tell of Comet Storms?" Astronomy, 17:12, January 1989.) Comment. Unanswered above is the question of why comet storms should be periodic. One hypothesis is that Nemesis, the so-called Death Star, a dark companion of our sun, lurks out there, periodically nudging the Oort Cloud of comets, causing it to release some of its comets. From Science Frontiers #62, MAR-APR 1989 . 1989-2000 William R. Corliss ...
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