The Unusual & Unexplained
Strange Science * Bizarre Biophysics * Anomalous astronomy
Archaeology Astronomy Biology Geology Geophysics Mathematics Psychology Physics
From the pages of the World's Scientific Journals
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Science Frontiers The Unusual & Unexplained
Strange Science * Bizarre Biophysics * Anomalous astronomy
Archaeology Astronomy Biology Geology Geophysics Mathematics Psychology Physics
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Science Frontiers is the bimonthly newsletter providing digests
of reports that describe scientific anomalies; that is, those
observations and facts that challenge prevailing scientific paradigms.
Over 2000 Science Frontiers digests have been published since 1976.
These 2,000+ digests represent only the tip of the proverbial
iceberg. The Sourcebook Project, which publishes Science Frontiers,
also publishes the Catalog of Anomalies, which delves far more
deeply into anomalistics and now extends to sixteen volumes, and covers dozens of disciplines.
Over 14,000 volumes of science journals, including all issues of Nature
and Science have been examined for reports on anomalies. In this
context, the newsletter Science Frontiers is the appetizer and
the Catalog of Anomalies is the main course.
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Search results for: lunar crater15 results found containing all search terms. 108 results found containing some search terms.
3 pages of results.... Frontiers ONLINE No. 96: Nov-Dec 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Lunar Crater Chains The recent breakup of comet Shoemaker-Levi 9 into a long procession of fragments that subsequently crashed into Jupiter (SF#95 ... causes one to wonder whether similar events have occurred elsewhere in the solar system. On bodies with solid surfaces, the impacts of such processions would likely result in chains of craters. Jupiter's moon, Callisto, in fact, displays a dozen or so crater chains that ...... 1987.) Comment. Obviously, the glassy droplets at the Lonar Crater strongly support a terrestrial origin for tektites. Proponents of a lunar origin can still point out, however, that some strewn fields cannot be associated with any known terrestrial crater. And why doesn't ... 53: Sep-Oct 1987 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Tektite-like objects at lonar crater, india Arguments about the origin of tektites persist in the scientific literature. A strong consensus has these small, drop like glassy ...... Planetology "Current ideas about the moon appear to be mistaken on two fundamental points. First, at least within certain large classes of lunar craters, internal origin (i.e., some form of volcanism) predominates over impact; this result raises questions about the reality ... editors or referees, and awaits reply by readers." O'Keefe's article reviews considerable evidence supporting his two points: for Point One; crater dimensions and frequencies, craters with dark floors, lunar soil constituents; and, for Point Two; tektite analysis. He also ...... 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 ... 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; ...... Instability ALB2 Discrepancies in the Moon's Ephemeris ALB3 Nongravitational Forces and Earth-Moon Acceleration Discrepancies ALB4 Earth-Moon Acceleration Incompatible with Moon's Origin in Earth Orbit ALE LUNAR GEOLOGY PROBLEMS ALE1 Asymmetrical Distribution of Maria and Large Basins ALE2 Sinuous Rilles and Formations Resembling Terrestrial Water-Formed Features ALE3 The Lunar Rays ALE4 ... Anomalously Wet Areas AME17 Spectroscopic Evidence of Vegetation AME18 Apparent Lack of Extensive Surface Erosion AME19 Layered Deposits AME20 Evidence for an Episode of Accelerated Crater Obliteration AME21 Pedestal Craters and Their Eroded Environs AME22 Flow-Like Character of Crater Ejecta AME23 The Tharsis Bulge AMF LUMINOUS PHENOMENA ON MARS AMF1 ...... others that the rain of Australasian tektites originated in an impact event that occurred not on the earth but rather on the moon. A lunar impact would obviously not require a terrestrial crater, and earthly biota would be spared. The debate over the possible lunar origin of ... the atmosphere, where they were shaped aerodynamically and then fell as tektites. The extent of the immense Australasian-tektite strewn field implies a hard-to-miss crater about 100 kilometers in diameter. Yet, despite the geological recency of the event and despite much geological surveying, no convincing crater ...7. Ltps And Ets... 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 ... 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 ...... 126, we digested an article from Sky& Telescope entitled "The TLP Myth." The strong implication was that TLPs (Transient Lunar Phenomena) are observer illusions. Anomalists instinctively bristle at such dogmatic assertions. Especially with TLPs, because hundreds of light flashes and ... April 23, 1994. At that time, about one hundred amateur astronomers noticed a 40-minute darkening near the edge of the bright lunar crater Aristarchus. Happily, when this hundred-fold "illusion" took place, the lunar satellite Clementine was mapping the area around Aristarchus. ...... 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, ...... the moon. These magnetic concentrations (called "magcons") are located precisely on the opposite side of the moon from the larger lunar basins. How could an impact on the moon magnetize the antipodal region? The impact of a large silicate meteoroid at speeds of ... kilometers/second would not only blast out a big crater but it would also create a huge cloud of hot, partially ionized gas. This hot gas or plasma will conduct electricity and interact with lunar magnetic fields. As the plasma cloud spreads away from the impact ...... And, since our moon also boasts permanently shadowed crater areas, ice probably survives there, too. This is good news for future lunar colonists. But where could the ice on Mercury and the moon have come from? One source might have been the gases seeping ... would evaporate quickly in Mercury's near-vacuum atmosphere. But any permanently shaded areas at the planet's polar caps-- say, deep in a crater-- would remain below 100 K. This is cold enough to retain ice, even in a vacuum. Radar topographic studies ...... navigation 143-144 New Caledonia tumuli 19-20 perfection problem 141 poison production 144 population decline 149 stomping 148 transfer of learned behavior 133 Birthmarks 305 Births lunar influence, 122 periodicities 122-123 Black holes 92, 98, 103, 106, 238, 333 Black shales correlated with geomagnetic reversals ... Chemical reactions effect of solar activity 320 Chemosynthesis on Mars 65 at sea 165-167 Chemotherapy 117, 175 Cherokees 33, 45 Chessie 152 Chicxulub crater 221, 227, 238 Chief Mountain 224 Chiggers 147-148 Chimo Indians 4 Chimpanzees pygmy, 127 Chinese ancient, artifacts in Australia 28 ...... University of Montana, have identified four large basalt plateaus that might be terrestrial maria: "Notable examples of large lava plateaus that resemble lunar maria include, among others, the Deccan Plateau of India, the Columbia Plateau of western North America, the Parana Plateau of ... This is a surprise because terrestrial maria were never mentioned in my college geology courses. But, in those days, the one-mile-wide Meteor Crater, in Arizona, was the largest accepted consequence of celestial bombardment. Deccan basalt flows (also called the Deccan traps) in ...... violent origin. Not only did these bits of debris confound expectations, but their shatter cones implied shock-wave pressures far too low to achieve lunar and Martian escape velocities, or even the velocity necessary to propel that chunk of Malm limestone 200 kilometers. Something was wrong somewhere ... And near St. Gallen, Switzerland, there was discovered a 22-centimeter block of Malm limestone that was apparently ejected from the Ries impact crater, almost 200 kilometers away, about 15 million years ago. We know all of these rocks are impact debris because they contain ...... Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Cometary scars on the moon? More information has surfaced on the enigmatic lunar swirl markings (Category ALE5 in our catalog: The Moon and the Planets. These whitish blotches are not only visually incongruous, ... , have acquired near-infrared spectra of the swirl designated Reiner Gamma. They report that the composition of the swirl material does not match the crater ejecta; and, also, that a previously undetected reddish halo surrounds the swirl. Best guess at present: The swirls are ...... Science Frontiers ONLINE No. 120: Nov-Dec 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A Bright Flying Object And Another Enigmatic Crater The curious event described in the following abstract is eerily like the fireball and suspicious "crater" mentioned in SF#110. In that incident, which occurred November 22, 1996, near the HondurasGuatemala border, there was also a detonation. "On the early morning of 1994 January 18, a very bright luminous object crossed the sky of ...... Science Frontiers ONLINE No. 67: Jan-Feb 1990 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Explaining lunar flashes with life-savers Two recent items in the literature suggest ways in which flashes of light can be generated on the face of the moon. The first enlists the "Life-Saver effect (or "sugar-cube effect"). When Life Savers, sugar cubes, or rocks are fractured, light may flash from their broken surfaces. R.R. Zito, from Lockheed, thinks these flashes ...... are pleased to be able to present part of his (lightly edited) letter here: "On April 12, 1991, a strange explosion took place near the Russian town of Sasova (350 km to the southeast of Moscow). After the explosion, a crater, diameter about 30 m and depth 3m, was found. At first, several ideas about its nature were proposed, but now almost all of them are abandoned, except one: that it was a tectonic (endogenic, to be exact) origin. ...... Science Frontiers ONLINE No. 7: June 1979 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Moon And Life There are so many examples of lunar rhythms in terrestrial life that we tend to assume that these phenomena are understood. Obviously, evolution "created" these rhythms to further the cause of each moon-tuned organism. Palmer and Goodenough recount the classic example of the lunar synchronism of the palolo worm and add the even-more-amazing tale of P. megalops, another marine worm. Sure ...... Project Sourcebook Subjects Looking For The Smoking Gun We already know the victims (the dinosaurs and other fauna and flora), and there is considerable evidence that the bullet was a cosmic projectile of some sort. The absence of a smoking gun (a sufficiently large terrestrial crater with an age of 65 million years) has allowed volcanists to deny the cosmic catastrophists a complete victory. However, the recent identification of tektite-like glasses at the Cretaceous-Tertiary boundary (KTB) on Haiti is leading geological detectives closer and closer to the missing crater. ...... By general agreement, tekites are attributed to meteoric or cometary impacts that melt terrestrial rocks and splash liquid droplets into the atmosphere. There they are shaped by aerodynamic forces and solidify. This scenario is all very reasonable, but some nagging problems remain. Where-o-where is that crater? 770,000 years ago, a huge meteor hit somewhere on earth and strewed an immense batch of tektites and microtektites over fully 10% of our planet's surface (about 5 x 10 7 square kilometers). This is called the "Australasian strewn field ...... Science Frontiers ONLINE No. 66: Nov-Dec 1989 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Strange Blue Pool Found At The Bottom Of Crater Lake "A mysterious, small aqua-blue pool of dense fluid has been discovered at the bottom of Crater Lake. "'It is bizarre, it is remarkable,' said Jack Dymond, who with Robert Collier heads the three-year Crater Lake exploration project. 'I have never seen anything like it,' he said. "The Oregon State University oceanographer ...... 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 Anomalous distribution of large, fresh lunar craters The overwhelming majority of astronomers favors a meteor-impact origin for the giant fresh lunar craters. (Here, "fresh" means post-mare formation.) Such an origin would seem to favor random distribution of these craters. "However, it appears that the distribution of these large, fresh craters is far from random, contrary to what would be expected ...... Science Frontiers ONLINE No. 11: Summer 1980 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Mysterious Swirl Patterns On The Moon In at least three lunar locations, enigmatic bright-and-dark swirl patterns drape craters and mare terrains. Ranging from 10 kilometers across to less than 50 meters, they may be ribbon-like, open-looped, or closed-looped. The swirls are sharply defined but do not appear to scour or otherwise disturb the terrains where they occur. Similar swirl patterns have been recognized on Mercury. ...... Science Frontiers ONLINE No. 33: May-Jun 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The moon's moonlets The great lunar basins are not arranged randomly. They occur in bands-- not one band but several. How can this geometry be explained. One hypothetical scenario has the primitive moon surrounded by many moonlets 60 miles and larger in diameter, plying equatorial orbits that are unstable. As the moonlets' orbits decayed, some crashed into the moon's equatorial regions, blasting out ...... Science Frontiers ONLINE No. 16: Summer 1981 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The moon's magnetic swirls The impressively strong magnetic anomalies discovered on the lunar surface remain enigmas. They appear to be superficial patches of highly magnetic material rather than deep-seated manifestations of basic lunar structure. Instead of being associated with gravity anomalies, the magnetic patches seem coincident with strange swirl-like markings on the moon's surface. The logical inference is that the swirls are surface patterns of highly magnetic substance- ...... ONLINE No. 126: Nov-Dec 1999 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects It's All In The Seeing The August and September issues of Sky& Telescope contain articles that attempt to discredit long histories of observations of Transient Lunar Phenomena (TLPs) and the many, many anomalous coronas seen during total solar eclipses. Both classes of phenomena are written off as either observer misperceptions or idiosyncracies of the earth's atmosphere. Of course, such treatment of strange phenomena is not new, nor is ...... 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 ...... No. 52: Jul-Aug 1987 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Do large meteors/comets come in cycles? Only a few years ago, geologists refused to recognize any terrestrial meteor craters larger than Arizona's Meteor Crater, which is merely a mile or so in diameter. Now, we have a long list of craters or astroblemes (star wounds), some of which measure hundreds of miles across. In fact, there are enough large dated crters so that some scientists ...... 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 Offset Lunar Rainbow May 13, 1998. South Atlantic Ocean. Aboard the m.v. Appleby enroute from Long Beach to Port Talbot. "At 2225 UTC when a light rain shower was falling, a rainbow was seen on the starboard side roughly 2-3 cables from the vessel. It was very clear for about six minutes and was accompanied by a secondary bow after about half that time. ...... Science Frontiers ONLINE No. 2: January 1978 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Blind Man Runs On Lunar Time A psychologically normal blind man, living and working in normal society, was found to have circadian rhythms of body temperature, alertness, cortisol excretion, etc., that were out-of-step with society's normal 24-hour schedule. The periods of these biological cycles were about 24.84 hours and indistinguishable from the lunar day. (Miles, L.E.M., et al; " ...... Science Frontiers ONLINE No. 72: Nov-Dec 1990 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Impact Crater Beneath Lake Huron "With the help of magnetic sensors, scientists have detected a rimmed circular structure, 30 miles in diameter, more than a mile beneath the floor of Lake Huron. They believe the magnetic ring marks a buried crater-- blasted by a meteorite at least 500 million years ago." (Stolzenburg, W.; "Impact Crater May Lie beneath Lake ...... Science Frontiers ONLINE No. 78: Nov-Dec 1991 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Lunar Rainbow And Unexplained White Arc April 12, 1990. North Atlantic. Aboard the m.v. Canterbury Star. From left to right: normal secondary lunar rainbow (white). Normal primary bow (colored), anomalous secondary bow (white). "At 0004 UTC a bright, white arc was seen on the starboard bow and was quickly identified as a lunar rainbow. The ...... Male Fertility Correlated with Finger Length Anomalous Sound Production The Devil's Spot and Witch Pricking BHB ANOMALOUS HUMAN BEHAVIOR BHB1 Apparently Irrational Human Behavior BHB2 Similarities in the Behaviors of Identical Twins Reared Apart BHB3 Correlation of Disturbed Human Behavior and Solar Activity BHB4 Correlation of Disturbed Human Behavior and Lunar Phase BHB5 Correlations of Disturbed Human Behavior, Stormy Weather, and Infrasound BHB6 Correlation of Human Behavior and Climate and/or Season of the Year BHB7 Unusual Behavior Induced by Rhythmic Stimuli [BHH8, PBH BHB8 Cyclicity of Violent Collective Behavior BHB9 A Relationship between Number ...... is defined as being palpable and could also be that "missing mass" or "dark matter" that astronomers need to explain why spinning galaxies do not fly apart. Mirror Matter could also account for some mysterious terrestrial phenomena such as that unaccountable lack of a significant crater in Siberia, where the 1908 Tunguska blast leveled a huge forest but hardly disturbed the ground. Recently, Mirror Matter has been invoked to explain the ups and downs of terrestrial biodiversity. R. Foot and Z. Silagadze propose that the 26-millionyear periodicity in terrestrial ...... areas but the bush was in such a tangle that we had to give it up." (Ref. 3) Photographs accompanying the articles confirm some of the devastation. 1995. Northeastern Brazil. "Scientists in Brazil's northeastern state of Piaui are baffled by a crater that was punched into the tropical rain forest shortly after witnesses reported seeing a bright light streak across the sky. Researchers are uncertain whether the crater, 16 feet wide and 32 feet deep, was left by a meteorite or a piece of a comet. Physicist ...... Sourcebook Subjects The puzzle of the moon's origin The moon is the closest and best-studied astronomical object. Yet, there is no agreement as to its mode of origin. One might say that planetary scientists have just about thrown in the towel on the three major theories of lunar origin. Two recent articles attest to this discouraging situation. A Sky and Telescope article provides an excellent review of all three theories, indicating the reasons why each fails to convince a majority of scientists. The theories and the primary reasons for their rejection are: ...... the Skeptical Inquirer, matches the Nature article with one on the effect of the moon on human behavior. The authors (two psychologists and an astronomer) conclude: "This article outlines the results of a meta-analysis of 37 studies and several more recent studies that examined lunar variables and mental behavior. Our review supports the view that there is no causal relationship between lunar phenomena and human behavior. We also speculate on why belief in such relationships is prevalent in our society. A lack of understanding of physics, psychological biases, and ...... Shaw does introduce three ideas that are worth recording here. Large impact craters occur in swaths. Although this has been suggested before, Shaw has mapped out several swaths where large craters of about the same age are located. His "K-T swath" includes the Chicxulub crater (Yucatan), the Manson crater (Iowa), the Avak crater (Alaska), and three more in Russia-- all of which were gouged out about the time of the Cretaceous-Tertiary (K-T) boundary. Shaw has plotted several other swaths of ...... Was it really created during the searing, sand-melting impact of a cosmic projectile? This is how today's catastrophists would have it? At least three "minor" problems bedevil the accepted impact theory. The surface of the Great Sand Sea shows no sign of a giant crater. Neither do microwave probes deep into the sand by satellite radar. LDG seems too pure to be derived from a messy cosmic collision. Known impact craters, such as that at Wabar in Saudi Arabia, are littered with bits of iron and other meteorite debris ...... Online All Issues This Issue Sourcebook Project Sourcebook Subjects Rhythms in 5,927,978 french births The following is an English summary of a paper that appeared in a French scientific journal. "Is there any relationship between the times when babies are born and the synodic lunar cycle? There are published works that show that there is such a relationship. We have looked at 5,927,978 French births occurring between the months of January 1968 and the 31st December 1974. Using Fourier's spectral analysis we have been able to show ...... 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 Lunar Magnetic Mollusc From the abstract of a paper in Science: "Behavioral experiments indicated that the marine opisthobranch mollusk Tritonia diomedea can derive directional cues from the magnetic field of the earth. The magnetic direction toward which nudibrachs spontaneously oriented in the geomagnetic field showed recurring patterns of variation correlated with lunar phase, suggesting that the behavioral response to magnetism is modulated by circa-lunar rhythm." The magnetic ...... Science Frontiers ONLINE No. 71: Sep-Oct 1990 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Lunar Eclipses And Radio Propagation One can understand why long range radio propagation might be affected during a solar eclipse, because the ionizing radiation of the sun is temporarily intercepted by the moon. There is no such obvious explanation for radio propagation problems during lunar eclipses. Nevertheless, we have the following observation by L.M. Nash: "During 1978/79, I was stationed on Diego Garcia ...... Science Frontiers ONLINE No. 7: June 1979 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects White Area In Bottom Of Martian Crater Near the Martian equator, in the bowl of a 58-mile-diameter crater, Viking Orbiter snapped a peculiar white region. Called the "White Rock," the formation is 8.5 x 11 miles in size and possesses an unusual grooved surface. White Rock is too close to the equator to be ice or snow. It is a unique and unexplained feature. ...... ). Some anomalies and curiosities that are listed below have not yet been cataloged and published in catalog format. These do not have the alphanumerical labels. GE ELECTROMAGNETIC PHENOMENA IN THE ATMOSPHERE GEB RARE RAINBOWS AND ALLIED SPECTRAL PHENOMENA GEB1 Unusual Multiple Rainbows GEB2 Intersecting Rainbows GEB3 Lunar Rainbows with Offset White Arcs and Bows GEB4 Red Rainbows GEB5 Moving Rainbows... GEB6 Solar Rainbows with Offset White Arcs GEB7 Lunar Rainbows Transforming to Disks GEB8 Radial Streaks Crossing Rainbows GEB9 Rainbows Perturbed by Thunder and Lightning GEB10 Anomalous Fogbows... GEB11 Anomalous ...... Science Frontiers ONLINE No. 29: Sep-Oct 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Astronomy And Earthquakes "Large earthquakes in southern California with epicenters between 33 and 36 N have statistically significant 12 hourly, lunar fortnightly and 18.6-yr periodicities. Smaller earthquakes in the same region do not display these periodicities. A search for tidal effects associated with these periodicities shows that large earthquakes have significant correlations with the times and orientations of daily/semi-daily tidal stresses while the lunar fortnightly terms are ...... No. 20: Mar-Apr 1982 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Something hot beneath small saturn-satellite surfaces Crater-density studies of the small, icy Saturn satellites Rhea, Dione, Mimas, and Tethys reveal important non-uniformities in crater distribution and age. The anomalies are so large that astronomers have concluded that these objects must have undergone considerable evolution after they were formed by accretion (the currently accepted mode of formation). Unfortunately these four satellites are so small that they could not have accommodated ...... 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 of meteoric dust which may affect solar heating of the earth by absorption. References Ref. 1. Balling, Robert C., Jr., and Cerveny, Randall S. ...... have emerged. Clive Ruggles, the author of the present article, is one of the skeptics. He feels that the megalithic sites are impressive and intriguing but not the work of mental giants. After all, Ruggles says, 72 points of the compass have some lunar significance. Almost any circle of stones built for simple ritual purposes would have some significant lunar alignments! (Ruggles, Clive; "Prehistoric Astronomy: How Far Did It Go?" New Scientist, 90: 750, 1981.) Comment. The kind ...... Science Frontiers ONLINE No. 80: Mar-Apr 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Possible Chain Of Meteorite Scars In Argentina A string of linear depressions characterizes the Rio Cuarto crater field In the January 16, 1992, issue of Nature, P.H. Schultz and R.E. Lianza describe a curious chain of grooves incised in the Argentine pampas near Rio Cuarto. "During routine flights two years ago..., one of us (R.E.L.) noticed an anomalous alignment ...
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