... Science Frontiers ONLINE No. 14: Winter 1981 Supplement Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Radial spokes in saturn's rings Among all the recently discovered complexities of Saturn's rings, the dark spokes are perhaps the most challenging to astronomers. These dark areas seem to rotate with the rings and are likely regions nearly devoid of the particles that constitute the rings. The "normal" annular gaps between the rings can be explained in part as due to the gravitational influences of Saturn's moons. The dark spokes, however, do not succumb so easily. There are no obvious gravitational nuances that can sweep particles selectively from radially aligned areas. (Anonymous; "Voyager Discovers Spokes in Saturn's Rings," New Scientist, 88: 276, 1980.) Comment. Any theory accounting for radial gaps may also explain the "knots" of brightness occasionally seen through the telescope down the years. Incidentally, a few observers in the past have also claimed to have seen radial gaps in the rings, so the dark spokes are not exactly new. Reference. Spoke phenomena of Saturn's rings are cataloged at ARL5 in The Moon and the Planets. A description of this book is located here . From Science Frontiers #14, Winter 1981 . 1981-2000 William R. Corliss ...

... Science Frontiers ONLINE No. 18: Nov-Dec 1981 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Phoebe Not Locked To Saturn When Voyager 2 passed through the Saturn system a few months ago, it snapped pictures of Phoebe, Saturn's outermost moon. Phoebe is nicely rounded, 200 kilometers in diameter, and swings around Saturn in a retrograde orbit 550 days long -- nothing anomalous so far. Phoebe, however, turns out to be the only solar-system satellite whose axial period of rotation is not about equal to its period of rotation about its parent planet. All other moons, including our own, are gravitationally "locked" so that they always point the same hemisphere at the parent planet. (Anonymous; "Voyager's Fleeting Glimpse of Phoebe," New Scientist, 91:779, 1981.) Comment. One inference here is that Phoebe is a relatively recent addition -- and a good-sized one -- to the Saturn system, and just hasn't been there long enough to become "locked." From Science Frontiers #18, NOV-DEC 1981 . 1981-2000 William R. Corliss ...

... 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 Where did the 1780 eclipse go?October 27, 1780. The Maine Coast. An expedition from Harvard and the American Academy of Arts and Sciences, led by Samuel Williams, had set up equipment to observe the predicted total eclipse of the sun. A solar eclipse occurred all right, but the expedition was shocked to find itself outside the path of totality. They saw a thin arc of the sun instead of its complete obscuration by the moon. Modern analyses of this embarrassing incident for embryonic American science blame Williams for miscalculating the path of totality. Actually, recent computations compound the mystery. The expedition measured the time of the eclipse as 40 seconds later than it should have been for their (erroneously selected) site. Modern analysts insist further that the expedition should have seen an arc 10 arcsec wide subtending an angle of 89 ; instead, Williams and his colleagues measured an arc of less than 24 . Finally, the measured duration of the eclipse was far different from what it should have been. The members of the expedition were skilled and their instruments excellent. What happened? Was it human error? Are modern eclipse-calculating methods in error? Did something astronomical happen, such as a temporary, slight glitch in the earth's period of rotation? The mystery persists. (Rothschild, Robert F.; "Where Did the 1780 Eclipse Go?" Sky and Telescope, 63:558, 1982. ...

... Science Frontiers ONLINE No. 10: Spring 1980 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Long-delayed radio echoes J. Hals first observed long-delayed radio echoes in 1927. During the following half-century, scientists have been studying this perplexing problem, but it has been the amateurs who have accumulated the bulk of the data. Over 100 reports exist where echoes of radio transmissions were received seconds later at the original transmitting station. Since light travels 186,000 miles per second, any simple radio-wave reflector would have to be well beyond the moon's orbit. A wide variety of natural phenomena (interplanetary matter) and even artificial devices (alien space probes) have been postulated to explain the long delays. Muldrew's article is first of all an excellent summary of the long and fascinating history of this effect. His bibliography is extensive and apparently nearly complete. Muldrew next examines the various ionospheric mechanisms that might cause long delays. The ionosphere is a complex structure with ducts in which radio signals can get trapped. Delays of a second or so might be due to such trapping but the longer delays require some other explanation. Muldrew favors a rather complex interaction between signals from separate transmitters that (theoretically at least) can create a long-lived electrostatic wave that travels in the ionosphere -- a sort of natural memory device. The coded signals could then be read out much later when the proper natural conditions developed. Delays of up to 40 seconds might be possible with this "ionospheric memory ...

... of this region have revealed heavy frosts and fogs. Further, the clouds here have more moisture in them than elsewhere on Mars. Conclusion: Considerably more water exists near the surface of the Solis Lacus region than elsewhere. Since this area was the source of the great 1971 Martian dust storm, one wonders whether the unusual concentration of water has been revealed only because winds have stripped off the normally dry surface layer. (Huguenin, R.L ., et al; "Mars: An Oasis in Solis Lacus," Eos, 60:306, 1979.) Comment. Close-up photos of Mars show many signs of fluid erosion. Abundant water may still remain well below the planet's surface. Reference. Probable wet areas on Mars are cataloged at AME16 in The Moon and the Planets. Ordering information for this book is located here . From Science Frontiers #8 , Fall 1979 . 1979-2000 William R. Corliss ...

... 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 ...

... . Maccabee obtained the FBI's UFO file. His analyses of this file have been serialized in the APRO Bulletin. One of the most unsettling revelations concerns the FBI data on the notorious "green fireballs" of the 1948-1949 era. According to the verbatim transcript of the FBI record, dated January 31, 1949, File No. 5: November 1978 Briefly, the "fireballs" were a brilliant green, sometimes beginning and ending with red or orange flashes. The objects travelled mainly on an east-west line at an average speed of 27,000 miles per hour. They seemed to pass over in level flight at altitudes of six to ten miles. On two occasions vertical changes of course were noted. Size was about one-fourth the diameter of the full moon. Multiple fireballs appeared in two instances. No sound was ever noted. No debris was ever discovered. (Maccabee, Bruce S.; "UFO Related Information from the FBI File," APRO Bulletin, 7, March 1978.) From Science Frontiers #5 , November 1978 . 1978-2000 William R. Corliss ...

... , they reflect less light than the blackest coal dust. T.C . Van Flandern proposes that each ring is actually a single satellite, so small that we cannot see it, and that it sheds gases as it orbits. This small solid body would make the celestial mechanics people happy, and the gases would be invisible to the eye but still absorb light, making the ring of gases detectable when Uranus occults a star. (Van Flandern, Thomas C.; "Rings of Uranus: Invisible and Impossible?" Science, 204:1076, 1979.) Comment. An alternative explanation is that the rings are recently acquired and will soon disappear. An 1847 observation of a ring around Uranus exists, but a datum this old carries little weight. See our Catalog: The Moon and the Planets for this old sighting. This book is described here . From Science Frontiers #8 , Fall 1979 . 1979-2000 William R. Corliss ...

... grooves (700 meters wide and 90 meters deep) are located close to Stickney. On the other side of Phobos, grooves are consistently less than 100 meters wide. Despite these hints of impact origin, the grooves are not quite what one would expect from simple fracture by collision. Some show beaded or pitted structures. Other grooves are composed of irregularly bounded segments. Finally, some of the straight-walled sections seem to have slightly raised rims. Evidently, some internal forces, perhaps stimulated by the formation of Stickney, also played a part. (Thomas, P., et al; "Origin of the Grooves on Phobos," Nature, 273:282, 1978.) Reference. The grooves of Phobos and its other anomalies are catalogued at ALL2 and ALL3 in The Moon and the Planets. To order this book, go to: here . Map of the strange grooves on the Martian moon Phobos From Science Frontiers #4 , July 1978 . 1978-2000 William R. Corliss ...

... and are nearly perfect geometrical figures. The rims of the circles are generally raised and characterized by fracturing and brecciation. These structures can be traced in many geological environments and rocks of all ages. They control to an extraordinary extent regional geology and ore mineralization. To date, some 1,170 circles have been discovered, of which more than half can be visually traced for 360 . Larger circles may exist; one with a diameter of about 2,200 kilometers seems to encircle the southern end of Africa. In the United States, the centers of the circles fall in a northwesterly trend in Arizona; northeasterly in the Appalachians. These circular structures may have been created about 4 billion years ago by intense meteorite bombardment similar to and perhaps identical with the bombardment that marked the surfaces of the moon and other inner planets. (Saul, John M.; "Circular Structures of Large Scale and Great Age on the Earth's Surface," Nature, 271:345, 1978.) Reference. Huge craters and other large circular structures are cataloged at ETC1 and ETC2 in Carolina Bays, Mima Mounds. To order this volume, visit: here . From Science Frontiers #3 , April 1978 . 1978-2000 William R. Corliss ...

... 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 DID A HALF MILLION METEORS FALL ON THE CAROLINAS?The Carolina Bays get scant notice in the literature these days, but E.R . Randall has rescued them this undeserved obscurity. "For years, people living along the Carolina coast have marveled at a series of strange, oval-shaped depressions in the ground called 'Carolina Bays.' "From the air these shallow, marshy bogs created a landscape that resembles the pockmarked surface of the moon. They crisscross each other in a chaotic tapestry, but at ground level are hardly noticeable because of thick forests and semitropical swamplands. "Highways and modern housing developments have all but obliterated thousands of the bays, leaving them visible only to trained eyes. "Still, it is estimated that no fewer than 300,000 such bays, ranging from a few feet across to almost two miles in diameter, dot the East Coast landscape from southern New Jersey to northeastern Florida. One source places the number at more than half a million." Map showing areas of abundant Carolina Bays and frequent meterorite finds. However, meteorites are rare in the areas of the bays. Floyd continues with a brief history of the Carolina Bay region and then reviews some of the theories of origin that have been proposed. Two now-discarded mechanisms of formation invoked: (1 ) immense schools of spawning fish; and (2 ) icebergs stranded as the Ice Ages waned. In presenting today ...

... Science Frontiers ONLINE No. 155: Sep - Oct 2004 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Plant diffusion in the pre-Columbian world Did Chinese Ships Anchor off California 1000 years before Columbus found San Salvador? An Olmec-Chinese Connection Astronomy Our Twin Planet? Evidence that Mars is a former Moon! Biology The Itjaritjari Tick-Tock: Telomeres count off the generations of a species' time on Earth Stealth fish Geology The Dwarfing of island megafauna and the remarkable survival of some A double-whammy for the Yucatan, but that's only part of the story Geophysics A sign? Star-of-David ice crystals fall upon West Sussex Hessdalen: Valley of enigmatic lights When coming events really cast their shadows before them! Physics Entangled moments Mathematics Patterns of very loosely knit prime numbers ...

... Science Frontiers ONLINE 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 ...

... Frontiers ONLINE No. 118: Jul-Aug 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Broadside Against Small Icy Comets In a late-1997 issue, Geophysical Research Letters published a group of five papers that detailed five different lines of evidence that are inconsistent with the claim by L.A . Frank and J.B . Sigwarth that the earth is bombarded daily by 30,000 house-size icy comets. If such bombardment has really been occurring, scientists would have to rethink the origins of the earth's oceans, terrestrial life, and the formation of the solar system. No wonder the icy-comet hypothesis is strongly challenged! Three of the more interesting points made by this group of papers are as follows: Our moon could not escape the icy-comet bombardment. Roughly 1,000 craters 50 meters in diameter and splashes of debris 150 meters in diameter must occur each. There is no evidence that the moon is thus afflicted. Comets also carry the noble gases argon, krypton, and xenon. These gases should accumulate in the atmosphere as the comets disintegrate. The amounts of these gases actually measured are 10,000 times less than those the postulated bombardment would produce. The icy comets should break up near the earth and produce clouds of ice crystals. Sunlight reflected from such 30-ton clouds would be brighter than Venus and easily visible before they disperse. Such objects are rarely seen, implying that small icy comets do not exist in the numbers claimed. Preceding this series of five papers is ...

... .M . Olsen has investigated a bizarre observation from Kentucky. The date was September 28, 1996. "Vance C. Johns, a secondary-school horticulturist, lives a rural area east of Louisville. Sometime between midnight and 1:30 AM, he got up to use the bathroom and saw a strange object outside his bedroom window. His wife, Florence, keeps the drapes open on the center of three picture windows, and he immediately opened the other drapes for a better look. The open view through the windows, which face south, is of a grass lawn sloping to a curved driveway. This 0.8 -hectare cleared area is devoid of trees and other objects. Two large, automatic floodlights illuminate the ground around the entire house, and under a full moon, it was bright enough to read a book. The night was clear and about 10 C with no noticeable wind. No aircraft were in the area. "At a distance of 14 m (measured after the incident) from his vantage at the bedroom window, there appeared on the lawn an object resembling a common railroad cross tie but oriented in a vertical position, with one end on the ground. It was matte black, 2 1/2 - 2 3/4 m high and 30 - 35 cm wide. The sides were smooth with a well-defined corner joining the west and north sides. The view of the top showed the west and north top edges were also welldefined. The object appeared solid but did not cast a shadow. "As Johns watched ...

... Science Frontiers ONLINE No. 114: Nov-Dec 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Mekong Mystery The following question was posed in the September 6 issue of New Scientist. "My wife and I saw a puzzling sight in October 1994, in the Mekong River near Nongkhai, Thailand, during a full moon, in the evening. Lights appeared under the water for a few hundred metres along the Mekong River. They rose from the bottom of the river and floated to the surface, then shot like missiles into the sky and out of sight. They were the size of beach balls, and many flew out of the water every few minutes, surfacing about 10 metres apart. I am told that this happens every year at the same time. Locals say it is caused by a serpent releasing her eggs. Does anyone know of this phenomenon?" A. Pentecost answered. He noted first the similarity of the Mekong phenomenon to the will-o '- the-wisp or ignis fatuus. The usual explanation of ignis fatuus blames the spontaneous combustion of marsh gas. However, the Mekong lights are initially seen under the water where there would not be enough oxygen to support combustion. Pentecost suggested instead phosphorescent bacteria or the "cold flame" of phosphorus vapor which might form through diphosphane decomposition. (Pentecost, Allan, et al; "Mekong Mystery," New Scientist, p. 96, September 6, 1997.) References. The Mekong phenomenon may be allied with the many examples of luminous ...

... 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 How can the moon affect the earth's temperature?Several weather phenomena, such as precipitation and thunderstorm frequency, have been linked to the phase of the moon. Now, it seems that the moon's "cold" emanations can also raise the earth's temperature. Explaining how the moon's phase can have any warming effect at all on the earth's atmosphere is difficult, because the infrared energy received from the moon is only 10-5 that in sunlight. Nevertheless, a slight but statistically significant temperature effect does exist. In one study, the microwave emission of molecular oxygen was measured by a polar-orbit satellite. These data gave meteorologists the temperatures of the lowest 6 kilometers of the atmosphere from all areas of the planet. The temperature difference between full moon and new moon was only 0.02 C, with the full-moon temperature being the higher. (Ref. 1) A second study took actual surface temperatures measured at noon GMT each day at 51,200 locations around the world. These near-surface temperatures revealed a difference of 0.2 C between full and new moons -- ten times larger than that from the satellite study. (Ref. 2) 0.2 C and even 0.02 C are much too large to be attributed to direct lunar "heating." Instead, geophysicists wonder if the moon's orbit modulates the influx ...

... Science Frontiers ONLINE No. 93: May-Jun 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Anomalous Horizon Glows Seen On The Moon The spacecraft Clementine , now engaged in surveying the moon from orbit, has apparently recorded once again a perplexing sky glow that precedes lunar sunrises and follows lunar sunsets. An astronaut standing on the moon watching the spot where the sun is about to rise would see first of all two well-recognized phenomena: the solar corona (even though the solar disc is still well below the horizon) and the zodiacal light (sunlight reflected from interplanetary dust). In addition, the astronaut would detect a glow along the horizon itself, as in the illustration. Since the moon is virtually airless, there should be none of those gas molecules and suspended dust particles that cause the sunsets and sunrises that we admire so much here on earth. Still, there must be something suspended above the moon's surface to scatter light from the sun still located just below the horizon. The best guess is that lunar dust particles are ionized by solar radiation and are repelled upwards from the surface and hang there suspended by electrostatic forces. But no one really knows for certain the cause of the glow. (Cowen, R.; "On the Horizon: Clementine Probes Moon Glow," Science News, 145:197, 1994.) Reference. Anomalous lunar horizon glows are cataloged in ALO11 in our catalog: The Moon and the Planets. For details, visit here . From Science Frontiers #93 ...

... Science Frontiers ONLINE No. 99: May-Jun 1995 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Ltps And Ets Looking through our telescope for lighter fare, we discover a recent issue of Selenology . In it, A.V . Arkhipov, a member of the Research Institute on Anomalous Phenomena, based in Ukraine, presents a paper headed by the following abstract: "The "invasions" of Earth's vehicles in certain lunar regions stimulate a statistically significant, real, temporary increase in the probability of lunar transient phenomena there. It could be used as an indicator of a hidden alien presence on the moon also." A transient, reddish glow (shaded area) seen in the crater Gassendi on April 30 - May 1, 1966. Alien activity? To illustrate, says Arkhipov, the impact of Luna 2 and its rocket stage on the moon on September 13, 1959, was accompanied by light flashes and cloudlike phenomena at at least four spots on the moon. Such LTPs (Lunar Transient Phenomena) seem also to be associated with the arrival of other terrestrial spacecraft in a few select regions of the moon, such as Mare Tranquilitatis and Gassendi. What generates these LTPs, and why only in certain areas of the lunar surface? Arkhipov's answer is in his above-quoted abstract. (Arkhipov, Alexey V.; "' Invasion Effect' on the Moon," Selenology , 13:9 , no. 1, 1994) We have never examined this journal. Comment. Reigning paradigms ...

... doldrums on a black night, with 100% cloud cover. The wind was switching around and the waves cueless. Nainoa's own words were: "It was like I just got so exhausted that I just backed up against the rail, and it was almost as if, and I don't know if this is completely true, but there was something that allowed me to understand where the direction was without seeing it. And it was almost like when I just gave up fighting to try to find something with my eyes. I just settled down and then all of a sudden it was like this warmth came over me...When I sat back and leaned against the rail, I felt this warmth come over me and all of a sudden I knew where the moon was. But you couldn't see the moon it was so black, and then I directed the canoe with all this total confidence at a time when I had already convinced myself prior to the voyage that I would have no confidence in knowing where to go. And I turned the canoe to this particular direction, got things lined up, felt very, very comfortable in this cold, wet, rough environment and then there was a break in the clouds and the moon was there." (Finney, Ben; "A Role for Magnetoreception in Human Navigation," Current Anthropology, 36:500, 1995.) Ancient Pacific navigators making the voyage from Hawaii to Tahiti (in the Society Islands) dreaded crossing the doldrums near the Equator. Hawaii (not shown) ...

... 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 ...

... 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 ...

... 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 ...

... 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 A Yagi Watches A Solar Eclipse During the partial solar eclipse of July 11, 1991, D. Emerson had his Yagi antenna pointed in the direction of the phenomenon. His receiver was tuned to 145.8 MHz. The sun is always emitting radio noise, and one would expect that the moon passing in front of the sun would gradually cut off most, but not all, of the radio noise picked up by the antenna and, after the eclipse's midpoint, the noise would increase back to normal levels. Instead of the expected: Radio noise power measured during a partial solar eclipse. The arrows indicate the stages of the eclipse "There was no radio evidence of any effect of the solar eclipse until 1822 UTC, 58 minutes after the start of the eclipse. At that point, all detectable solar emission disappeared within the space of about nine minutes. The emission did not start to reappear until 72 minutes later, at 1943 UTC, and was fully restored by 1951 UTC, 13 minutes before the end of the eclipse, which occurred at 2004 UTC. "The fact that radio emission disappeared and reappeared fairly abruptly part way through the eclipse indicates that most of the radio emission was occurring from one discrete point on the sun's surface rather than from the entire solar disc." (Emerson, Darrel; "Radio Observations of Two Solar Eclipses," QST , p. 21, February 1995 ...

... Science Frontiers ONLINE No. 100: Jul-Aug 1995 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Microbes threaten radiocarbon dating Astronomy Has jupiter flashed before? A POT POURRI OF MARTIAN CUSIOSITIES (AND WE DON'T MEAN "FACES" AND "PYRAMIDS") Biology Anomalous larvae and the burning of heretics When humans were an endangered species Straight from the horse's ear The watchmaker is not blind after all! Geology Weird icicles Giant sea-bed pockmarks Geophysics Anomalous phenomena associated with the 1908 tunguska event How can the moon affect the earth's temperature? Kobe quake jostles the geo- magnetic field Superhail Physics When different universes rub together Another starchy anomaly Unclassified Unidentified object ...