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... Science Frontiers ONLINE No. 92: Mar-Apr 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Jovian lightning or cosmic short circuit?In July, 1994, the comet Shoemaker-Levy 9 is scheduled to meet a fiery end as it plunges into Jupiter's atmosphere. Since this cataclysm is predicted to occur on Jupiter's far side, the pyrotechnics will be largely hidden from our telescopes. Yet, if any of Jupiter's four large Galilean satellites are swinging behind Jupiter during the comet's impact, but still visible to us by virtue of their distances from Jupiter, we might see one or more of these moons suddenly brighten due to light reflected from the incineration below. This very well might happen, and something similar has happened before. On July 26, 1983, just 6 minutes after it emerged from behind Jupiter, the Galilean satellite, Io, suddenly brightened by 50% -- a "flash" that lasted 118 seconds. Now, Io is notoriously fickle brightness-wise. Its post-eclipse brightening has long puzzled astronomers, but this short, intense flash was even more anomalous than usual. H.B . Hammel and R.M . Nelson suggest that this 1983 flash might have been the reflection of some catastrophic event occurring on the hidden half of Jupiter -- possibly the impact of some large object -- or, even more intriguing, Jovian lightning. (Hammel, H.B ., and Nelson, R.M .; "Bright Flash on Jupiter ...
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... Science Frontiers ONLINE No. 43: Jan-Feb 1986 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Waiting for saturn's rings to collapse The more we learn about Saturn's rings, the stranger they seem. One of the latest theoretical models of the rings has them composed of balls of hard ice, which interact through mutual collision and are herded by the gravitational caresses of small moons. The successes of this model have been tempered by the fact that it also implies that Saturn's rings are very young. "Theorists would have no problem with a broad, featureless disk surviving the 4.5 billion years since the early days of the solar system, but features such as spiral density waves are clear evidence that satellites, including the profusion of small ones found near the rings, are draining angular momentum from the rings. The satellites should be spiraling outward into ever larger orbits as they gain angular momentum, and the A-ring should collapse inward into the B-ring in just 100 million years as its particles lose angular momentum." (Kerr, Richard A.; "Making Better Planetary Rings," Science, 229:1376, 1985.) Reference. For other indications of youth in Saturn's rings, see ARL16 in our catalog: The Moon and the Planets. For information on this book, visit: here . From Science Frontiers #43, JAN-FEB 1986 . 1986-2000 William R. Corliss ...
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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 Wandering Albatrosses Really Wander Tracks of three Wandering albatrosses in the southern Indian Ocean. Six male wandering albatrosses nesting on Crozet Island, between South Africa and Antarctica, were fitted with tiny (180-gram) transmitters and tracked by satellite. Their flights were amazing: "Tracks of wandering albatrosses in the southwestern Indian Ocean showed that they covered between 3,600 and 15,000 km in a single foraging trip during an incubation shift. They flew at speeds of up to 80 km per h and over distances of up to 900 km per day. They remained active at night, particularly on moonlit nights..." (Jouventin, Pierre, and Weimerskirch, Henri; "Satellite Tracking of Wandering Albatrosses,; Nature, 343:746, 1990.) From Science Frontiers #70, JUL-AUG 1990 . 1990-2000 William R. Corliss ...
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... of life, particularly advanced life. As a case in point, the polar axis of Mars, with only two tiny moons to dampen its spin excursions, seems to have gone through many wild swings, as indicated in the figure. What deadly climatic changes must have wracked our sister planet! (Touma, Jihad, and Wisdom, Jack; "The Chaotic Obliquity of Mars," Science, 259: 1294, 1993. Also: Laskar, J., and Robutel, P.; "The Chaotic Obliquity of the Planets," Nature, 361:608, 1993.) Comment. The successful evolution of higher life on earth (a presumption!) therefore seems to have depended upon the gravitational shields of Jupiter and Saturn as well as the presence of our unusually large satellite. How likely is this combination of planets and satellites in the rest of the universe? Of course, life-as-we-know-it also requires just the right kind of central star and a planet with good air and water. Perhaps lifeas-we-do-not-know-it is more likely! From Science Frontiers #87, MAY-JUN 1993 . 1993-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 129: MAY-JUN 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects TLPs One Fades, Others Flash The TLP (Transient Lunar Phenomenon) reported in SF#127 involved a 40-minute darkening of an area near the lunar crater Aristarchus on April 23, 1994. The phenomenon was observed independently by some 100 amateur astronomers. The initial analysis of data returned at the same time by the lunar satellite Clementine at first seemed to confirm the amateurs' telescopic impressions. But after correcting the satellite data for lighting geometry and other effects, Clementine's vision of the TLP faded away like the Cheshire Cat. TLP doubters were well-satisfied. (Anonymous; "Lunar Surface Change: A False Alarm," Sky & Telescope, 99:22, March 2000. Cr. D. Barbiero.) Comment. Were the independent observations by 100-or-so geographically dispersed amateurs all hallucinations? The TLP "myth" does not fade away so easily. On the night of November 17/18, 1999, the Leonid meteors pelted the earth's atmosphere and, as one would expect, the moon's surface. The moon's atmosphere, however, is almost non-existent so its share of the Leonid shower did not burn up before hitting the surface. But might not the high-velocity impacts with the surface create luminous phenomena? To find out, a team of observers monitored the dark side of the moon during the peak of the Leonid shower. Sure ...
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... by the USGS in Menlo Park and the University of Nevada, Reno). In fact, it is the largest vertical rock free-fall ever recorded seismically and it registered on seismographs up to 200 km distant." (Uhrhammer, R.A .; "Seismic Analysis of the Yosemite Rock Fall of July 10, 1996," Eos, 77:508, 1996.) December 9, 1995. Southern Ecuador. "On the afternoon of December 9, 1995, a bolide exploded in the atmosphere over the Andes in southern Ecuador. Many people in nearby towns witnessed the event. They reported seeing a streaking meteor, which terminated in a loud and brilliant explosion. In some locales, the flash was noticeable even through cloud cover. The burst of light was observed by satellite optical sensors used to detect atmospheric nuclear tests. Three local seismic stations also recorded signals from the explosion...This bolide appears to be unique in that it was observed by eyewitnesses and located by both satellite and ground-based sensors." The sound of the meteor's explosion was heard at least 56 kilometers away. (Chael, Eric P.; "Seismic Signals from a Bolide in Ecuador," Eos, 77:508, 1996.) From Science Frontiers #111, MAY-JUN 1997 . 1997-2000 William R. Corliss ...
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... hundreds of nights worth of stellar observations over almost 30 years. In the latest number of the Journal of Sci entific Exploration, he reported some of his more perplexing sightings in the Chilean skies, two of which are related below: "At approximately 22:30 local time on January 17, 1980, I was in front of my home in the eastern suburbs of Santiago de Chile. The sky was cloudless, although there was some smog, especially in the west in the direction of downtown. Sunset had occurred at 20:55 local time. "At that time I observed a point-shaped luminous object at an elevation of about 20 degrees; it was moving at a rather slow angular velocity from southwest to west approximately. No noise was heard and it looked like an artificial satellite, except for the direction of its motion. Its brightness, color and angular velocity reminded me of the old Echo artificial satellite from the 1960s. The object disappeared from sight during the few seconds it took me to call two persons to participate in the observation. It was not apparent how the object had disappeared from view since there were no sources of obscuration evident. Having become puzzled by this observation I continued watching that same region of sky from time to time. "About fifteen minutes later (22:45 local time) and more or less in the same region where the bright light had been observed I spotted a faint luminous object moving slowly toward the zenith. During the first few seconds of observation it had the appearance of a luminous thread, oriented perpendicular to its direction ...
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... GEL9 Low-Sun Spectral Bows GEL10 Low-Sun Shadow Bands GEL11 The Second Purple Light GEL12 Moving Patches of Light on the Horizon Jumping Stars Post-Twilight Infrared Brightening of the Sky Extraordinary Sunsets GEM THE MAGIC OF MIRAGES GEM1 Fata Morganas GEM2 Telescopic Mirages GEM3 Lateral Mirages GEM4 Multiple Mirages GEM5 Mirages Sensitive to the Observer's Position GEM6 The Novaya Zemlya Effect GEM7 Illusions of a Flat Earth GEM8 Dynamic Mirages GEM9 Mirror or Reflection Mirages Double Moons Mock Mirages GER RADIO AND RADAR ANOMALIES GER1 Long-Delayed Radio Echos GER2 The Moon's Effect on Radio Propagation GER3 Thunderstorm Modification of Radio Propagation GER4 Stable Patterns of Electromagnetic Radiation GER5 Unidentified Radio Signals... GER6 The Humming Earth GER7 Polar Radio Blackouts GER8 Around-th e-World Transmission of High-Frequency Signals GER9 Periodic Fading of Satellite Radio Transmissions GER10 Sudden Disappearance of High Frequency Radio Transmissions GER11 Correlation of Radio Propagation Quality with Planetary Positions GER12 Earthquake-Induced Ionospheric Disturbances GER13 Easier Radio Transmission in One Direction than Its Reverse GER14 Radar Dot Angels GER15 Radar Ring and Line Angels GER16 Radar Ghosts Mexico's Zone of Silence Infrared Angels Extremely-Low-Frequency (ELF) Phenomena Effect of Low-Pressure Areas upon Shortwave Propagation Unidentified Atmospheric Radio Bursts Detected by Satellites GES SHADOW PHENOMENA GES1 Eclipse Shadow Bands GES2 Moving Shadow Bands in the Atmosphere GES3 Colored Shadows GES4 Shadow Bands Seen through the Telescope GES5 Unusual Shadows Observed during Eclipses GES6 Non-Eclipse Shadow Bands GES7 Persistent or "Living" Shadows GES8 Curious Mountain Shadows Curious Shadows of Condensation Trails GEZ ANOMALOUS MAGNETIC AND ELECTRIC-FIELD DISTURBANCES GEZ1 Unexplained Magnetic Disturbances GEZ2 Effect of the ...
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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 Long Reach Of The Hawaiian Islands From aircraft and satellites, one can see strong contrasts in the roughness of the ocean surface in the lee of those idyllic islands with their volcanic peaks that poke over 10,000 feet into the Pacific airstreams. These long streaks on the ocean surface are called "wind wakes." The wind wake leeward the Hawaii is spectacular. These islands are swept by steady northeast trade winds. Mauna Kea (4201 meters), Mauna Loa (4201 meters), and other Hawaiian peaks penetrate high above trade inversion. Together they create a visible wind wake some 3,000 kilometers long to the west -- many time-greater than any other island wind wakes to be seen on the planet. The effects of these soaring peaks are more than visual. Their wind wake drives an eastward ocean current that, in turn, draws warm water away from the Asian coast 8,000 kilometers distant from Hawaii. Thus, a few island mountains affect the climate of a continent a fifth of the way around the globe! (Xie, Shang-Ping, et al; "Far-Reaching Effects of the Hawaiian Islands on the Pacific Ocean-Atmosphere System," Science, 292:2057, 2001.) Comment. The Hawaiian wind wake is not anomalous but it is surely interesting. From Science Frontiers #137, SEP-OCT 2001 . 2001 William R. Corliss Other Sites of ...
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... Science Frontiers ONLINE No. 82: Jul-Aug 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Warm, wet, fertile mars Mars may not be orbited by huge artificial satellites of alien provenance, but its geological history is looking more and more as if could have supported or perhaps still does support life. "A large number of anomalous landforms on Mars can be attributed to glaciation, including the action of ice and meltwater. Glacial landscapes are concentrated south of lat -33 and in the Northern Plains suggesting vast Austral and Boreal ice sheets. Crater densities on the glaciated terrains indicate that the final glacial epoch occurred late in Martian history. Thus, Mars may have had a relatively warm, moist climate and dense atmosphere much later than previously believed." (Kargel, Jeffrey S., and Strom, Robert G.; "Ancient Glaciation on Mars," Geology, 20:3 , 1992.) If Mars was warm and wet not too long ago, as implied above, perhaps life did gain a foothold there through either independent invention or, perhaps, through seeding by template-carrying comets or meteorites. P.J . Boston et al have investigated one possible Martian ecosystem: "We have reexamined the question of extant microbial life on Mars in light of the most recent information about the planet and recently discovered nonphotosynthetic ecosystems on Earth -- deep sea hydrothermal vent communities and deep subsurface aquifer communities. On Mars, protected subsurface niches associated with hydrothermal activity could have continued to support life even after surface conditions ...
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... of Astronomical Anomalies Sorry: Out of Print. No longer available. From our own moon's cratered surface to the red, rock-strewn plains of Mars, the Solar System is a fertile field for scientific research. Despite centuries of observation, each new spacecraft and telescope provides us with new crops of anomalies [Picture caption: One drawing of the Venusian radial spoke system] Typical subjects covered: The ashen light of Venus * The Martian 'pyramids' * Kinks in Saturn's rings * Continuing debate about the Voyager life-detection experiments * Neptune's mysterious ring * Evidence of water on Mars * The grooves on Phobos * The two faces of Mars * Lunar clouds, mists, "weather" * Ring of light around the new moon * Dark transits of Jovian satellites * Io's energetic volcanos * Jupiter as a "failed star" * Venus-earth resonance Comments from reviews: "The author is to be commended for his brilliantly conceived and researched volume", Science Books. 383 pages, hardcover, $18.95, 80 illustrations, 4 indexes 1985. 988 references, LC 85-61380, ISBN 915554-19-4 , 7x10 format. The Sun and Solar System Debris: A Catalog of Astronomical Anomalies Sorry: Out of Print. No longer available. Our sun, powerhouse of the Solar System and an enigma itself, is orbited by clouds of asteroids, comets, meteors and space dust These "minor objects" cause "major headaches" to astronomers searching for explanations. Typical subjects covered: Solar svstem resonances * ...
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... Science Frontiers ONLINE No. 34: Jul-Aug 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Strange Object In The Sky January 20, 1983, 0515 GMT. The m.v . Baron Pentland was drifting off Christmas Island in the Indian Ocean. A report was heard on the Christmas Island Radio that an object had been spotted high in the sky to the west of the island. The officers of the Baron Pentland picked up the object with binoculars and sextant. "First thoughts were that this was the satellite Cosmos 1402, but this was dismissed as it was a day too early and it was not moving fast enough. In fact it appeared stationary to the naked eye. Another school of thought was that this was a weather balloon. As can be seen from the simple sketch, it was unlike any weather balloon previously seen by the observers. It was of a squat cylinder shape, wider than it was tall. The circle at the bottom appeared to be dimly lit with a pale blue colour. The 'torso' was almost invisible, even with binoculars, giving the impression that there were two distinct and separate lights. The top 'light' appeared to be a dome atop the main body and it was extremely bright. By wedging the binoculars in the bridge doorway, it was possible to gain a very steady view as the vessel's main propulsion system was shut down and the seas were light. Thus a clearer picture was obtained and in this way the object was identified as being cylindrical ...
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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 Multiple Whirlwind Patterns English meteorologists are spending some of the lazy summer days out in the countryside tracking down whirl wind patterns engraved on fields of wheat and other crops. One eyewitness account of the formation of a single spial pattern has been found. However, the multiple spiral patterns excite the most interest because of their geometric regularity. Between 1980 and 1984, eight quintuplet patterns have been found consisting of a large central circle and four smaller satellite circles. Triplets were also discovered. Although the origins of the multiplet patterns are still unexplained, some interesting generalizations have emerged: 1. The whirlwinds responsible for the flattened circles of crops have lifetimes of only a few seconds, whereas dust devils may persist for many minutes; 2. These whirlwinds seem to occur around evening time instead of during the heat of the day; and 3. They are all anticyclonic, while tornados are almost all cyclonic and true heat whirlwinds are split about evenly in their spin direction. (Meaden, G.T .; "Advances in Understanding of Whirlwind Spiral Patterns in Cereal Fields," Journal of Meteorology, U.K ., 10:73, 1985.) Quintuplet circles found in a grain field near Cley Hill, England. From Science Frontiers #40, JUL-AUG 1985 . 1985-2000 William R. Corliss ...
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... Project Sourcebook Subjects Neptune's partial rings Neptune's rings cannot be seen directly. Instead, earth-based astronomers watch for occultations or dimmings of stars as they pass behind the rings. This seems straightforward enough in theory, but the occultations have been perplexing in practice. First, one member of a closely spaced double star will be occulted normally by the rings but its companion won't . Second, some terrestrial observatories will record an occultation but another a few thousand miles away will not. Such experiences have led to the hypothesis that the rings are discontinuous; that is, they are arcs rather than complete rings. Why should Neptune's rings be different from those of the other major planets? On speculation maintains that the arcs are the consequence of one or more recently satellites. Another hypothesis, by J.J . Lissauer, has the arcs gravitationally shaped and maintained by two moons, one of the shepherd type (as with Saturn's rings), the other at a Lagrangian point in the arc's orbit. (Kerr, Richard A.; "Neptune's Ring Arcs Confirmed," Science, 230:1150, 1985. Also: Lissauer, Jack J.; "Shepherding Model for Neptune's Arc Ring," Nature, 318:544, 1985.) Comment. The theories employing "shepherd" moons to gravitationally mold and maintain planetary rings have been weakened by the apparent absence of such bodies at the theoretically necessary locations around Saturn and Uranus. Also relevant is the possible youth of Saturn's rings. ...
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... Science Frontiers ONLINE No. 45: May-Jun 1986 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Ozone Hole Over Antarctica Reviewing ozone-mapping data from the polar-orbiting Nimbus-7 satellite, R. Stolarski and colleagues at NASA's Goddard Space Flight Center have seen the concentration of ozone over Antarctica drop dramatically -- some 40% -- every October. This disappearing act commences about a month after the sun begins to graze the northern horizon and affects the entire continent. By early November, the sun is high enough to manufacture enough ozone via its ultraviolet radiation to fill the ozone hole up again. An analogous hole does form over the North Pole in the northern spring. An additional fact of interest: the hole is getting deeper each year; that is, the ozone concentration is less and less each October. Speculations about the deepening seasonal hole involve the widespread use of chlorofluorocarbons and Antarctica's physical isolation from other land masses which would help channel ozone southward from areas where the sun still shines. (Weisburd, S.; "Ozone Hole at Southern Pole," Science News, 129:133, 1986.) From Science Frontiers #45, MAY-JUN 1986 . 1986-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 47: Sep-Oct 1986 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Oceans from outer space?Back in SF#44, we related how L.A . Frank, at the University of Iowa, had detected dark spots on satellite images of the earth's dayglow. Frank thought that the spots might be due to clouds of water vapor released as small, icy comets hit the atmosphere. P. Huyghe has recently written more about Frank's discovery, his theory, and its reception by the scientific community. "These comets are not occasional visitors, he [Frank] says, like the one that comes by every 76 years and -- lucky for us -- never actually drops in. No, these are very small, cometlike objects that enter our atmosphere at a rate of 20 per minute, he says. These comets, which he believes must contain about 100 tons of water apiece, vaporize on impact with the atmosphere and fall as rain or snow. Now that may seem like one sizeable cold shower, but on a yearly basis he says it's actually only a tiny fraction of the annual preciptation. Then again, over a span of 4.5 billion years, which is about how old the earth is, that's enough water, he says -- trumpets blaring -- to create the oceans." Naturally, such a theory is very disturbing because it runs counter to the widely accepted idea that the oceans were created by the ...
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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 Magnetic Precursors Of Large Storms On January 22, 1986, a magnetometer at the Fredricksburg Magnetic Observatory, in Virginia, recorded a sudden jump (of 45 gammas) in the earth's horizontal magnetic field component. Alerted to this, G. Wollin, at the Lamont-Doherty Geological Observatory, immediately predicted that a major snowstorm or flooding rains would hit northeastern states within six days. Wollin contacted the weather people in the region, but they discounted the prediction because satellite pictures and conventional weather indicators implied nothing of the sort. A three-day storm began on January 25, depositing 3 feet of snow in northern New England and 4 inches of rain along the coast from Washington to Boston. Wollin has had similar successes, without even looking at a weather map! Obviously, Wollin's forecasting techniques are not yet part of the Weather Bureau's arsenal. This is not too surprising because even Wollin does not understand why major storms should be preceded by several days by nervous magnetometers. He talks in a tentative way about solar storms, which do affect terrestrial magnetism, dumping energy into the oceans and thence into the atmosphere. But this is mainly speculation. Historically, we do know that long-term changes in the earth's magnetic field are linked to global temperature levels (see graphs); but here, too, cause and effect are not obvious. (Gribbin, John; "Magnetic Pointers ...
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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 Small Icy Comets And Cosmic Gaia L.A . Frank and his associates at the University of Iowa have speculated that the earth is continuously and copiously bombarded by small, icy comets. Not just a few now and then, but a steady rain so intense that over geological time some major geological consequences must ensue. (See SF#44.) Some observers commented that surely these 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 ...
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... Science Frontiers ONLINE No. 56: Mar-Apr 1988 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Wave-bands in calm waters and biscay boils An excerpt from an article in Nature: "There are numerous reports of internal waves being 'made visible' on the sea surface by their effect on the surface-wave field and the production of bands of steeper, often breaking, waves separated by zones of relatively calm water. The effect is sometimes quite dramatic. There are accounts of a 'low roar' as the bands of breaking waves, 'walls of white water,' pass a vessel. The bands are sometimes visible from aircraft, on ships' radar and are observed from satellites. In the Bay of Biscay 'boils' have been reported on the sea surface in the calm zones, and appear to be related to pulses of nutrients from the thermocline." These surface phenomena are truly delightful and almost always the consequence of internal waves interacting with the surface. The great bulk of the referenced report is concerned with sonar observations of internal waves and their effects along the coast of Scotland. (Thorpe, S.A ., et al; "Internal Waves and Whitecaps," Nature, 330:740, 1987.) Comment. For some remarkable accounts of wave packets, as well as solitary waves, see category GHW in Earthquakes, Tides, Unidentified Sounds. This book is described here . On March 28, 1964, in the Indian Ocean, the R.R .S . Discovery ...
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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 Nereid: grotesque shape or two-faced?Nereid, a satellite of Neptune, is peculiar in several ways: Its orbit is retrograde and highly elliptical (1 .4 x 9.7 million kilometers) Its brightness changes by a factor of four as it rotates Its diameter, according to M.W . and B.E . Schaefer (Nature, 333:436, 1988) is thought to be at least 660 kilometers. None of these facts taken alone is anomalous, but (2 ) and (3 ) taken together seem incompatible. If the large brightness changes are due to a highly irregular shape, Nereid's 660-kilometer size is too large, because astronomers agree that gravitational forces will sphericize all objects larger than 400 kilometers. On the other hand, if Nereid is two-faced, like Saturn's moon Iapetus (it's carbon-black on one side, light-colored on the other), astronomers are again faced with trying to explain how such a large solar-system object can acquire so much carbonaceous material on one side only. Also, Nereid's eccentric, retrograde orbit surely hints at a history of capture or orbit disruption. (Weisburd, S.; "Neptune's Nereid: Another Mysterious Moon," Science News, 133:374, 1988. Also: Veverka, J.; "Taking a Dim View of Nereid," ...
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... 1989 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Books About The Crop Circles You know a phenomenon has "made it" when a book is devoted to it. With the English crop circles, we now have two books (bibliographical information below.) We will try to stock at least one of these books, but it will be a few months before can can get them on this side of the Atlantic. Meanwhile, a review of the two books in New Scientist provides some information beyond that already presented in several past issues of SF. First, the crop circles, spanning 5 to 20 meters, are incredibly precise and sharp. Flattened stems on the periphery of a circle almost touch erect, undamaged stems. The so-called satellite circles that sometimes array themselves around the main circles may be connected by a narrow ring, thus: Even more curious, a short radial spur extends outward from some circles, so that from the air the circle resembles a fat tadpole. In his book, G.T . Meaden, the Editor of the Journal of Meteorology, U.K ., presents his theory of how the circles are incised in field crops: "He describes the clues that have enabled him to point to the circles being formed by the impact of a body of fast-spinning air that has been partially ionized. He explains how a columnar atmospheric vortex, with a vertical or inclined axis, provides the channel for the formation of a plasma (ionized gas) vortex and for its conduction towards the ...
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... 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's magnetic field, it is small, only 1% that ...
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... tuned instrument with approximately 850,000 electrical and tactile receptors? These are far more sophisticated than those found in fish. When the platypus goes foraging underwater, a furry groove closes, covering its eyes and ears, and the nostrils on the bill are sealed shut. It becomes a high-tech predator -- despite all those snide remarks about its primitive nature. The poison spurs on the back legs of the male platypus are nothing to fool around with. They can cause humans severe pain and weeks of paralysis. And a dog can lose its life when a platypus clamps its legs around its muzzle and drives in its spurs. But, ask evolutionists, how did this poison apparatus get on the hind legs? The supposed ancestors of the platypus, the reptiles, modified their salivary glands for venom delivery. How did the platypusses break from this evolutionary mold and innovate? It's not consistent with the text! The fossil record reveals that a platypus-like creature lived long before the Age of Mammals. These early platypusses had teeth in the adult phase, whereas their modern relatives replace their baby teeth with horny plates -- another innovation. Therefore, far from being a hodgepodge of parts left over from bird and reptile evolution, the platypus has actually pioneered several zoological features. Very curious is the fact that the platypus is in many ways like the beaver -- a very, very distant relative both in distance and position on the Tree of Life. Both platypus and beaver are furry, aquatic creatures with webbed feet and a large, flat tail. We ...
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... Science Frontiers ONLINE No. 82: Jul-Aug 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Phobos Mystery Object On March 28, 1989, Russian ground controllers suddenly and unexpectedly lost contact with their spacecraft that was shadowing the Martian moon Phobos. The last close-up photo of Phobos snapped by the spacecraft contained "an object which shouldn't have been there." Naturally, this Phobos Mystery Object (PMO) was quickly dubbed a UFO by some. It was even speculated that the Russian mission had been deliberately terminated by aliens! Such a scenario dovetailed neatly with the old speculations that Phobos is actually an artificial satellite of Mars, which is being used as a base of operations by someone or something. The final photo of Phobos, taken in infrared light just three days before the communication failure, reveals the outlines of both Phobos and the PMO. All surface detail is washed out, as is common in infrared photographs. If the PMO was at the same distance as Phobos itself, it would be about 2 kilometers wide and 20 long. Its surface brightness is the same as that of Phobos. The sides of the PMO are perfectly parallel; it is rounded at both ends; the end towards Phobos narrows slightly; the other end seems to have a slight protrusion. Since the PMO does not appear to have a metallic surface and displays no antennas or other indicators of artificiality, it is reasonable to ask whether it might be some natural phenomenon. One possibility is that the PMO image is only ...
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... Science Frontiers ONLINE No. 86: Mar-Apr 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Cloud Plumes Natural But Still A Bit Anomalous During the mid-1980s, satellites photographed strange cloud plumes that stretched hundreds of kilometers downwind of some nothern islands, especially Bennett Island, in the Soviet Arctic. Some wondered if perhaps the Soviets were conducting tests of some new type of weapon in these remote locations. With the end of the Cold War, flights of instrumented aircraft over the islands were permitted. Data from these flights support the idea that the mystery cloud plumes are formed by air currents passing over the islands. In other words, they are only orographic or mountaincaused clouds, like those sometimes seen over the Rockies. But puzzles persist: Why are the plumes so long? Why do they form at such high altitudes -- more than 3 kilometers above the tops of the relatively small mountains on the islands? (Monastersky, R.; "Mountains Give Rise to Perplexing Plumes," Science News, 141:422, 1992. Also: Fett, Robert W.; "Major Cloud Plumes in the Arctic and Their Relation to Fronts and Ice Movements," Monthly Weather Review , 120: 925, 1992.) From Science Frontiers #86, MAR-APR 1993 . 1993-2000 William R. Corliss ...
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... : Jul-Aug 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The shattering of 951 gaspra 951 Gaspra is an irregular asteroid with an average radius of 6.1 kilometers. Located at the inner edge of the main asteroid belt between Mars and Jupiter, Gaspra is believed to be composed mainly of olivine, pyroxene, and nickel-iron. Shape model of Gaspra showing the locations of the grooves. On October 29, 1991, the Galileo spacecraft swept past 951 Gaspra at a distance of 1600 kilometers, snapping photographs as it went. J. Veverka et al report below on what the photos showed: "We report the discovery of grooves in Galileo high-resolution images of Gaspra. These features, previously seen only on Mars' satellite Phobos, are most likely related to severe impacts. Grooves on Gaspra occur as linear and pitted depressions, typically 100-200 m wide, 0.8 to 2.5 km long, and 10-20 m deep. Most occur in two major groups, one of which trends approximately parallel to the asteroid's long axis, but is offset by some 15 , the other is approximately perpendicular to this trend. The first of these directions falls along a family of planes which parallel three extensive flat facets identified by Thomas et al. The occurrence of grooves on Gaspra is consistent with other indications (irregular shape, cratering record) that this asteroid has evolved through a violent collisional history." (Veverka, J., et al; "Discovery of Grooves on Gaspra ...
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... Science Frontiers ONLINE No. 96: Nov-Dec 1994 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology That little "roman" head from precolumbian mexico The "kites" or "keyhole" structures of the middle east Astronomy On the sun, south is almost everywhere The moon: still partly molten? Lunar crater chains Biology Too identical! Why do flying fish have such colorful wings? "ADAPTIVE" MUTATION Electric snakes Geology Satellite spies strange stripes Two really deep oceans Geophysics The 536 ad dust-veil event Underwater thumps Remarkable straw fall Unusual lunar halo Psychology Psi phenomena and geomagnetism Physics Cold fission? Mathematics Lazzarini eats humble pi (posthumously) Unclassified A CURIOUS STRING OF COINCIDENCES Close encounters with unknown missiles ...
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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 The moon: still partly molten?Our long-time impression has been that our moon is a cold body, solidified eons ago, when its primordial ration of heat radiated away. But the lunar satellite Clementine -- tracked with great precision by lasers on earth -- undulates suspiciously as it orbits the moon. "The overall shape of the orbit traces the broad tidal bulges raised on the moon by Earth and the sun; the size and timing of the bulges depend on the moon's rigidity. The Clementine data show that somewhere, probably deep in its interior, the moon is not quite as rigid as solid rock would be. Most likely, part of the rock is still molten." (Kerr, Richard A.; "Clementine Mines Its First Nuggets on the Moon," Science, 264:1666, 1994.) From Science Frontiers #96, NOV-DEC 1994 . 1994-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 98: Mar-Apr 1995 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Earthquake Ripples In The Ionosphere During the January 1994 Northridge earthquake in California, the ground surface acted like a drumhead. By suddenly shoving the surface upwards by about 40 centimeters, the quake generated atmospheric disturbances that spread skyward at velocities of 1,000-2 ,200 kilometers/hour. Upon reaching the ionosphere, the waves created ripples that were detected by the array of navigational satellites that make up the Global Positioning System (GPS). (Monastersky, Richard; "Bouncing an Earthquake off the Sky," Science News, 146:415, 1994) Comment. The great 1964 Alaskan quake not only blasted the ionosphere, it generated air waves that were detected by a microbarograph at Berkeley, California, 3,130 kilometers away. See GSW2 in Earthquakes, Tides, Unidentified Sounds. For a description of this volume, visit here . From Science Frontiers #98, MAR-APR 1995 . 1995-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 100: Jul-Aug 1995 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A POT POURRI OF MARTIAN CUSIOSITIES (AND WE DON'T MEAN "FACES" AND "PYRAMIDS")A shadow and grid-like pattern. ". .. the recent Phobos probe that the Russians sent to Mars in 1988 -- which met a mysterious and untimely demise -- recorded two quite mysterious Anomalies on the planet before contact was lost with the satellite. One was a strange shadow moving across the planet's surface (not a shadow of either of Mars' moons)! The other anomaly was a strange grid-like pattern at one location on the Martian surface; it was photographed with an infrared camera on Phobos 2, the first such instrument carried on a spacecraft sent to Mars." (Ref. 1) The canals are still there -- in a shadowy way ! Commenting upon the theory that those Martian canals that keep showing up on plates made through terrestrial telescopes are only picture/film defects, D. Louderback points out that the: ". .. canals are also showing up on CCD [Charge-Coupled Device] camera photos like the one taken by Donald Parker with a 12.5 -inch reflector and shown on the cover of the Strolling Astronomer earlier this year. It clearly showed a pentagonal pattern of canals surrounding Elysium. It is almost certain that these were not a 'picture defect'!" (Ref. 1) Searching for explanations, J ...
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... Science Frontiers ONLINE No. 101: Sep-Oct 1995 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology FROM THE SUNSWEPT LAGOON Astronomy THE METAL-FROSTED MOUNTAINS OF VENUS! ALH 84001: A MESSAGE FROM MARS OR PERHAPS SOME OTHER PLANET IRONCLAD PROOF OF THE MOON'S ORIGIN? Biology THE ALGORITHMIC BEAUTY OF SEASHELLS MORE HEAR EARS DRAGON FISH SEE RED MALE DOLPHIN KILLS MAN Geology POLAR-BEAR BONES CONFOUND ICE-AGE PROPONENTS A TRIPLE ANOMALY IN A DIAMOND THE GIANT LANDSLIDES OF HAWAII "ALMOST INCONCEIVABLE" CHANGES IN THE GEOMAGNETIC FIELD CHINA'S BERMUDA TRIANGLE Geophysics DEATH WAVES AND SEEBARS STRANGE PHENOMENON DETECTED BY RADARS AND SATELLITES AN ASTONISHING MEDLEY OF BIO LUMINESCENT DISPLAYS Unclassified THE GREAT EXODUS ...
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... Science Frontiers ONLINE No. 101: Sep-Oct 1995 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects From the sunswept lagoon Mitchener fans will recognize the above title as heading one of his chapters in Hawaii . Many Polynesian navigators did indeed set out from sunswept lagoons into the superficially featureless Pacific. How did these peoples, a thousand years ago, sail reliably from one speck of land to another, thousands of miles distant? The archeology of Oceania confirms that the Polynesians made such voyages centuries before they learned about compasses and navigation satellites. But were these voyages anomalous; that is, did the Pacific peoples possess devices or talents unrecognized today by mainstream science? For the most part, the answer seems to be NO. While the navigational abilities of the Polynesian seafarers seemed supernatural to early European explorers, it has been convincingly demonstrated -- through modern voyages -- that the senses of sight, hearing, smell, touch, and time-passage are and were sufficient for most interisland voyages. The early Pacific navigators were adept at observing the waves, stars, birds, clouds, winds, and several other natural phenomena that carry subtle directional cues. There are, however, modern instances in which Pacific navigators bereft of the usual sensory cues seem to employ an anomalous "sense." B. Finney, in his study of the possibility of human magnetoreception, tells how one native Hawaiian navigator, though wellschooled in traditional Polynesian navigational techniques, conquered the dread doldrums on a 3,000mile voyage from Hawaii to Tahiti in a way ...
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... Science Frontiers ONLINE No. 104: Mar-Apr 1996 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Puzzling Winds The Amazon jungle seems to be receiving more than its share of natural calamities. Remember the meteor-devastated swaths and strange "crater" reported in SF#103? Well, here's another phenomenon that may or may not be related. "Scientists studying weather patterns in the Amazon Basin have detected extremely powerful, sudden bursts of wind over the rainforest. The winds, which appear to be associated with thunderstorms in the northwest part of Brazil, blow downward with tremendous force. Satellite photos indicate that a single episode demolished 10 square miles of jungle in only 20 minutes." (Anonymous; INFO Journal, no. 74, p. 39, Winter 1996. INFO = International Fortean Organization. Source cited: Alexandria Journal, June 30, 1995) From Science Frontiers #104, MAR-APR 1996 . 1996-2000 William R. Corliss ...
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... Lake victoria's cichlid fishes: can random mutations explain them?Lake Victoria is Africa's largest lake (420 kilometers long, but only 69 meters at its deepest). It is also the home of more than 300 species of cichlid fishes. Ordinarily, that number of different species would pose no problem for the biologists -- look at the 400 or so species of hummingbirds in Central and South America! Lake Victoria, however, is a very young lake, and all of these cichlid fishes are endemic. Therefore, they must have evolved rather rapidly. Recent seismic surveys of Lake Victoria and piston cores from its deepest parts by T.C . Johnson et al have surprised everyone: Lake Victoria was completely dry 12,400 years ago. Nor were there deeper "satellite" lakes that could have served as refuges for Lake Victoria's biota during extreme droughts. It is difficult to avoid the conclusion that the present-day 300+ species of cichlid fishes all evolved in less than 12,400 years. This being so, can random mutations -- the accepted source of evolutionary novelty -- have generated so many new species in such a short time? That would be one new species every 40 years or so on the average. (Johnson, Thomas C., et al; "Late Pleistocene Desiccation of Lake Victoria and Rapid Evolution of Cichlid Fishes," Science, 273:1091, 1996) Comments. Of course, hybridization may have accelerated the evolution of the 300+ species. Perhaps "adaptive" or "purposeful" evolution ...
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... No. 109: Jan-Feb 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Lunar Landslide Lights Moonwatchers have reported light flashes, strange red glows, and mist-like patches emanating from certain lunar locales, particularly the huge craters Alphonso and Picard. Hundreds of such observations have accumulated since the Middle Ages. Modern more-systematic scrutiny indeed confirms that the moon is not such a dead place after all. (See ALF in The Moon and the Planets for much more on this fascinating subject.) Moonquakes, gaseous emissions, and even volcanic activity have been the favorite explanations of these TLPs (Transient Lunar Phenomena), but these are only surmises. The many close-up photos of the lunar surface taken in 1994 by the lunar satellite Clementine gave B. Buratti, K. Herkenhoff, and T. McConnochie the opportunity to search for geological common denominators connecting the sites where TLPs have been most frequent. The suspicious sites are characterized by bluish spectra that usually indicate unusually fresh deposits of lunar debris. Furthermore, these areas are usually found along the inside edges of large craters. Buratti et al opine that these are the sites of recent landslides that have cascaded off the crater edges. The dust and volatile gases released by these events might account for the observed luminous phenomena. (Cowen, Ron; "Explaining a Lunar Mystery," Science News, 150:314, 1996.) Reference. To order the book The Moon and the Planets (mentioned above), visit here . The lunar crater Gassendi on April ...
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... Science Frontiers ONLINE No. 112: Jul-Aug 1997 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology We've known it all along! Japanese mini-pyramids Astronomy A TWISTED COSMOS? Signals from the sun and, eventually (? ), other entities Biology You may become what you eat Dolphin refrigerators From the depths of the amazon Archea: tough and different Sea turtles: from one end to the other Geology Large rotating ice discs on ice-covered rivers The kind of fault you like to find Geophysics Icy minicomets caught by a satellite camera? Apparent circular lightning Pschedelic phenomenon Physics When like charges attract Cold-fusion pro-fusion Unclassified Computer con-fusion http://www.shakespeare.unduplicated ...
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... Science Frontiers ONLINE No. 122: Mar-Apr 1999 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Our Lucky Star About every 5 years our sun spits a giant blob of ionized gases in the earth's direction. These "coronal mass ejections" or flares interfere with terrestrial communications and knock out power grids. But we are lucky it isn't worse. Studies of stars in our galaxy similar to the sun find that they emit super-flares about once every century. If our sun sent such a super-flare our way, the atmosphere would glow like a neon tube, our fleet of satellites would be fried, and half the protective ozone layer would disappear in a flash. Earth life would survive -- at least for a while. Our sun, it seems, is favored with anomalous stability, but no one knows why. We are simply lucky! (Seife, Charles; "Thank Our Lucky Star," New Scientist, p. 15, January 9, 1999.) Comment. We also live in a "lucky" galaxy. (See NOW WE KNOW WHY...later in this issue.) The universe is anthropic (i .e ., favoring humans) at all levels! From Science Frontiers #122, MAR-APR 1999 . 1999-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 124: Jul-Aug 1999 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The 21-micron mystery The following phenomenon is rather technical and is observable only to those astronomers lucky enough to have an infrared spectrometer aboard a satellite. These privileged scientists "see" strange infrared shrouds centered at 21 microns draped around certain red giant stars. The feature of these infrared shrouds that makes the phenomenon worthy of our attention in SF is the width of the spectrum. It is so wide that it cannot be produced by single atoms or molecules. The shrouds must consist of complex molecules, possibly even solids. The infrared glows are so strong that the elements involved must be common in the universe, in all likelihood carbon and hydrogen. Speculators have fingered polymers, ball-shaped fullerenes, and "nanodiamonds"; i.e ., very tiny diamonds! The debate has scientists repairing to their laboratories where they are trying to find some substance with a spectrum that matches that of the mystery shrouds. (Hellemans, Alexander; "Labs Hold the Key to the 21-Micron Mystery," Science, 284:1113, 1999.) Comment. Are not biological materials rich in carbon and hydrogen? This reminds us of F. Hoyle's books: Lifecloud and Diseases from Space , wherein outer space is characterized as teeming with prebiotic molecules, bacteria, and even-more-bizarre life forms. From Science Frontiers #124, JUL-AUG 1999 . 1999-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 9: Winter 1979 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Large, unseen mass is pulling earth toward it Recent measurements of the cosmic microwave background indicate that the earth moves relative to it. New cosmic X-ray data from the satellite Ariel 5 suggests that a large, hitherto unsuspected mass is located in the same direction that the earth is moving. Thus, both X-ray and microwave data could be explained by supposing this mass to be large enough to pull the earth (and our Galaxy) toward it. This mass would have to be about 10 billion light years away and weigh as much as 100 million Galaxies. Such a gigantic blob or inhomogeneity in the universe would be very difficult to explain. As it is, the aggregation of stars into galaxies after the Big Bang remains poorly understood. The bigger the inhomogeneity, the harder it is to account for. The Big Bang should have spread matter out pretty evenly. (Anonymous; "Large Mass May Pull Earth Through Space," New Scientist, 83:21, 1979.) From Science Frontiers #9 , Winter 1979 . 1979-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 10: Spring 1980 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Cosmic Death Waves In the language of science, W.M . Napier and S.V .M Clube provide a scenario of cyclic terrestrial catastrophism. Their thesis is that the solar system periodically passes through the regularly spaced spiral galaxy arms every few 107 years. Planetesimals in these arms cra-ter the solar-system planets at these times and also provide the raw materials for new comets, asteroids, satellites, and even planets. Supporting their theory is the repeating history of geological revolutions with the accompanying extinctions and reflowerings of life. A remarkable feature of this paper is a table of shortlived solar-system phenomena (comets and rapidly evolving staellite-and-ring systems). The tenor is one of episodic catastrophism and a rapidly changing solar system; viz., Saturn's rings evolving in only 104 years. (Napier, W.M ., and Clube, S.V .M .; "A Theory of Terrestrial Catastrophism," Nature, 282:455, 1979.) Comment. This outlook differs radically from that still disbursed in our schools and colleges. From Science Frontiers #10, Spring 1980 . 1980-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 13: Winter 1981 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Tidal Wave Of Gammas Sweeps Solar System On March 5, 1979, a colossal burst of gamma rays swept through the solar system, triggering radiation detectors on nine different spacecraft. By comparing the times of arrival of the burst, the direction of the source was narrowed down to a "box" a couple of arc minutes across. Gamma-ray bursts have never before been correlated with visible sources, but this time the box contained the remnants of a supernova in the Large Magellanic Cloud, a satellite galaxy of our own Milky Way. The anomaly that arises involves the immense distance of the supposed source and the strength of the burst when it reached the solar system. The power level of the supernova remnant gamma flash would have had to be about 1037 watts -- a stupendous figure. If the supernova remnant is a neutron star, as current theories suggest, the neutron star would have to be 10 to 100 times the size of the usual neutron stars. (Anonymous; "Gamma-Ray Burst Comes from Outside the Galaxy," New Scientist, 87:776, 1980.) From Science Frontiers #13, Winter 1981 . 1981-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 20: Mar-Apr 1982 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology A Recently Discovered "book" of Petroglyphs Astronomy A Big Void in Space Or A Defective Yardstick? Something Hot Beneath Small Saturn-satellite Surfaces A Couple Venusian Curiosities Biology Heads Or Tails? A Tale of Two Ecosystems -- or Maybe Many More Missing Links: the Big Ones Still Elude Us Puzzling Group Behavior of Sharks Geology Gravity Anomaly Ripples Centered in Canada Subterranean Petroleum Factories? Geophysics A Most Peculiar Cloud Arch Whirling Crescents Move with Ship Psychology The Mystery of Spontaneous Visions ...
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... Science Frontiers ONLINE No. 22: Jul-Aug 1982 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Dark Secret Behind Jupiter When Jupiter's satellite Io ducks into Jupiter's shadow, something mysterious happens. Some of the time, but not always, Io emerges from the shadow about 10% brighter than when it entered. In 10-20 minutes, its brightness decays to normal levels. One suspicion is that SO2 in Io's atmosphere condenses on the planet's surface when it is in the cold shadow, thus coating some dark areas with a bright sulfurous 'frost.' However, a recent measure of Io's post-eclipse brightness detected no brightness change whatsoever. Apparently we have a real but rather unreliable phenomenon. (Morrison, Nancy D., and Morrison, David; "Io; Post-Eclipse Brightening Still Mysterious," Mercury, 11:27, 1982.) Reference. Io's post-eclipse brightening is cataloged at AJX6 in The Moon and the Planets. To order this book, visit: here . From Science Frontiers #22, JUL-AUG 1982 . 1982-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 156: Nov - Dec 2004 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Hot-desert frozen desserts Were Europe's magnificent cave paintings actually rendered by those brutish Neanderthals? Astronomy Flying blankets threaten satellite Francis filament is too long Biology "We are all mutants" Limboids Organizers on the chicken-coop floor Unexplained Exodus Psychic birds Geology Why is the Earth so wet? The Vitim bolide event Geophysics Infrared Foo Fighters? Spray devils off Cyprus Psychology Total-Zombies and cinematographic vision Physics Errant beach sand 20-degrees: the magic angle in stone-skipping ...
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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 There are cold anomalies "out there"As data from the IRAS (Infrared Astronomy Satellite) pile up (at 700 million bits per day), astronomers are seeing a new universe -- one consisting of cold gas, dust, and debris that emit little or no visible light. Here are just four of the new enigmas revealed: (1 ) Infrared "cirrus clouds." A network of faint wisps of cold matter that cover the whole sky. (2 ) Galactic matter of an unknown nature. This material has been observed only on one of the 100-micrometer IRAS scans. (3 ) A ring of solid particles around the star Vega. (4 ) "Blank fields." IRAS scans have found infrared sources where no visible object exist. (Waldrop, M. Mitchell, and Kerr, Richard A.; "IRAS Science Briefing," Science, 222:916, 1983.) From Science Frontiers #31, JAN-FEB 1984 . 1984-2000 William R. Corliss ...
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... Mar-Apr 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Neptune's incomplete ring When the star SAO 186001 had a "close" encounter with Neptune on July 22, 1984, a number of astronomers were watching it carefully to see its light was diminished by an encircling, Saturn-like ring of particles surrounding Neptune. The ring system of Uranus was discovered by studies of similar stellar occultations. Sure enough, astronomers at the European Southern Observatory, in Chile, and the Cerro Tololo Observatory, also in Chile 90 kilometers away, detected a 1-second, 35% reduction in the star's light at the same instant. These data indicate the presence of an object 10-20 kilometers wide -- hardly an undicovered satellite, but possibly a ring. But given the geometry shown, there should have been two occultations, but only the one on the right was registered. Speculation is now rife that Neptune has a partial ring or a grotesquely twisted one. (Eberhart, J.; "Signs of a Puzzling Ring around Neptune," Science News, 127:37, 1985.) Comment. Of course the geometry of the ring could have been such that the star was tangent at one point. It should also be noted that modern astronomers have always laughed off the 1846-1847 observations of a Neptunian ring by W. Lassell and J. Challis! From Science Frontiers #38, MAR-APR 1985 . 1985-2000 William R. Corliss ...
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... earlier voyage in October 1976. Over a zone extending more than 400 km to the north of Greenland there is evidence of a significant decrease in mean ice thickness in 1987 relative to that found in 1976. This thinning amounts to a loss of volume of at least 15% over an area of 300,000 km2 ." (Wadhams, Peter; "Evidence for Thinning of the Arctic Ice Cover North of Greenland," Nature, 345:795, 1990.) In an accompanying discussion of the ice problem, A.S . McLaren et al note that since the late 1800s, Arctic researchers using drills have reported consistently that the Arctic ice thickness averaged 3-4 meters. U.S . subma-rine surveys concurred with these figures during cruises in 1960 and 1962. Satellite surveys of ice cover from 19781987 found no trends. In other words, other sources of data on the Arctic ice reveal little change. The new results, therefore, need further confirmation. (McLaren, A.S ., et al; "Could Arctic Ice Be Thinning?" Nature, 345:762, 1990.) From Science Frontiers #72, NOV-DEC 1990 . 1990-2000 William R. Corliss ...
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... Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Huge fireball explosion in 1994 This remarkable event was mentioned by C. Keay in his review of D. Steel's book Rogue Asteroids and Doomsday Comets . It seems to have escaped or been ignored by the scientific press. We quote from Steel's book, in which he complains that such events get little publicity despite their ominous implications for the future of humanity. "It is therefore not surprising that the 10-meter-or-so asteroid that blew up over a largely vacant area of the western Pacific on February 1, 1994, producing an explosion equivalent to at least ten times that of the Hiroshima bomb (and possibly rather more), was not seen prior to impact. Surveillance satellites registered it as the brightest such explosion that they have picked up so far. Despite the efforts of numerous scientists in this area of study to make the military aware that such detonations do occur naturally, it appears that the U.S . President was awakened because the Pentagon thought that this incident might be a hostile nuclear explosion." From Science Frontiers #102 Nov-Dec 1995 . 1995-2000 William R. Corliss ...
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... reflections from aircraft lights and tricks of vision. Their meteor-like behavior suggested that perhaps these events might be caused by clouds of exceedingly small meteoroids, visible only because of their numbers and compact grouping. Because such a formation would be unlikely to be maintained long in space, it appeared necessary that the particles involved must have maintained some weak physical contact until just prior to becoming visible. Perhaps some type of 'cosmic dust bunny,' disrupted by air resistance, might be the cause of these events." These moving patches of light also resemble the "auroral meteors" cataloged under GLA3 in Lightning, Auroras, Nocturnal Lights. Physically, they might be related to the small, icy comets postulated by L.A . Frank to account for the transient "holes" seen in satellite ultraviolet images of the earth. (See SF#60 and #72 for more.) (Gallagher, John S.; "Diffuse Luminous Objects Having Angular Velocities Similar to Meteors," Strolling Astronomer , 36:115, 1992. Cr. P. Huyghe) References. The above phenomenon is cataloged in AYO8 under "Nebulous Meteors" in our book: The Sun and Solar System Debris. Ordering information for this book and Lightning, Auroras (mentioned above) may be found here . From Science Frontiers #86, MAR-APR 1993 . 1993-2000 William R. Corliss ...
Terms matched: 1 - Score: 14 - 15 May 2017 - URL: /sf086/sf086a03.htm
... Science Frontiers ONLINE No. 98: Mar-Apr 1995 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The earth has recently been swallowed by a cloud of inter-stellar gas Using cosmic-ray data and stellar spectra gathered by seven satellites, P.C . Frisch, at the University of Chicago, has constructed a cosmic scenario that reminds us of F. Hoyle's science fiction tale, The Black Cloud . According to Frisch, until just a few thousand years ago, the solar system was cruising through interstellar space that was almost devoid of matter. Then, perhaps within historical times, 2,000-8 ,000 years ago, the solar system plunged into an interstellar gas cloud. This cloud is believed to be the remnant of the bubble of matter shot into space perhaps 250,000 years ago by a supernova in the Scorpius-Centaurus region. This tenuous cloud of gas feeds matter into the solar system, some of which interacts with the solar wind and, therefore, affects the geomagnetic field, too. Climate changes may have been caused by entry into this cloud, and very likely the flux of cosmic rays impinging on the earth would have been modulated. (Frisch, Priscella C.; "Morphology and Ionization of the Interstellar Cloud Surrounding the Solar System," Science, 265:1423, 1994. Also: Peterson, I.; "Finding a Place for the Sun in a Cloud," Science News, 146:148, 1994.) Comment. Note that the 2 ...
Terms matched: 1 - Score: 14 - 15 May 2017 - URL: /sf098/sf098a04.htm
