6 results found.
... was formed. Lurking in many star clusters, however, are brighter, bluer nonconformists called "blue straggler stars." These stars seem to have about twice the mass of the "normal" cluster members, and they appear to be only about one-fifth as old as their compatriots. The motions of the blue stragglers are consistent with those of bona fide cluster members, implying that they are not interlopers or foreground objects. Several explanations have been suggested to explain the presence of blue stragglers. One thought is that they harbor asteroid-size black holes at their cores. So far, all of the profferred explanations have serious flaws. (Fogg, Martyn J.; "Blue Straggler Stars: A Cosmic Anomaly," The Explorer, 6:4 , Spring 1990.) Socket stars. "A picture book hardly seems a likely source of an astronomical discovery, especially in a world where mysteries of the universe usually tumble from sophisticated electronic instruments attached to huge telescopes. Nevertheless, while recently paging through Exploring the Southern Sky , by G. Madsen and R. West, Walter A. Feibelman (NASA Goddard Space Flight Center) recognized something that had caught his attention decades before. High-resolution photographs of nebulae show large numbers of faint stars surrounded by circular or oval 'empty' regions, giving the impression that the stars are sitting in 'sockets,' a few arc seconds across, swept free of nebulosity." Feibelman rules out photographic effects, such as halation, but has no ready explanation for socket stars. M.W . Castelez ( ...
Terms matched: 1 - Score: 61 - 15 May 2017 - URL: /sf070/sf070a03.htm
... , but its stomach is like that of a sheep, which is a "simple" ruminant. The babirusa's stomach possesses an extra sac; and the animal often browses on leaves and shoots. It does not, however, chew a cud. The Indonesian babirusa, a pig-like animal with curious tusks and an unusual digestive system (for a pig). Taxonomists are a bit puzzled over the babirusa. They aren't sure whether its closest relatives are modern pigs, peccaries, or hippos. The babirusa's "tusks" pose more questions about its evolution: "The creature's oddest characteristic is the two impressive pairs of curving tusks grown by the males. One pair are simply extended lower canines, but the second are actually upper canines, the sockets of which have rotated, resulting in tusks that grow through the top of the muzzle and emerge from the middle of the animals's face. The effect is bizarre and startling. The males fight with their dagger-like lower canines and probably deflect opponents' blows with the upper set, thus protecting their eyes. Indonesians say the tusks are similar to deer antlers, giving the babirusa its name, which means 'pig deer.'" (Rice, Ellen K.; "The Babirusa: A Most Unusual Southeast Asian Pig," Animal Kingdom, 91:46, March/April 1988.) Comment. Turning a pair of teeth 180 in the upper jaw is a fascinating evolutionary accomplishment. It is difficultto-explain on the basis of random mutations, especially in ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf066/sf066b08.htm
... about the status of Protoavis. A. Feduccia: "Calling this the original bird is irresponsible." (1 ) J.H . Ostrom: "Sad to say, for all its length, little support for the claim is to be found in this paper." (2 ) J. Gauthier: While some of the bones appear bird-like, they also look dinosaurian and could represent a new type of theropod dinosaur. (3 ) For his part, Chjatterjee asserts that Protoavis' skull has 23 features that are fundamentally bird-like, as are the forelimbs, the shoulders, and the hip girdle. "His reconstruction also shows a flexible neck, large brain, binocular vision, and, crucially, portals running from the rear of the skull to the eye socket -- a feature seen in modern birds but not dinosaurs." (1 ) Just why is there so much fuss over a handful of poorly preserved bones? If Protoavis is really a bird, it places the origin of birds 75 million years earlier and dethrones Archaeopteryx as a tran sitional link between dinosaurs and birds. In fact, Protoavis essentially denies that birds evolved from the dinosaurs. In short, Protoavis could change a limb or two on that Tree of Life you see in all the textbooks. References 1. Anderson, Alun; "Early Bird Threatens Archaeopteryx's Perch," Science, 253:35, 1991. 2. Ostrom, John H.; "The Bird in the Bush," Nature, 353:212, 1991. 3. Monastersky, ...
Terms matched: 1 - Score: 14 - 15 May 2017 - URL: /sf078/sf078b06.htm
... Science Frontiers ONLINE No. 64: Jul-Aug 1989 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Ball Lightning In Yorkshire May 14, 1985. Yorkshire, England. "At Garton-on-the-Wolds, two miles west-north-west of Driffield and 60 metres AMSL, the electricity went off at 6.l5 pm. Half an hour later Mr and Mrs Foster, who were in their paddock tending to the horses during the thunderstorm, heard a 'terrific bang.' On arriving back in their house they found that the television aerial had been blown out of its socket and there were scorch marks on the window sill and curtain lining. The television plug's negative and positive pins had been blown out of the socket but the earth pin was still intact. A hole some 8 cm by 10 cm across and 4 cm deep was found in the wall by the side of the socket. Several components of the television were damaged and fuses in the main fuse box were blown. Also, at 6.45 pm, Mr and Mrs Foster's daughters, Rachel and Rosemary, were with a friend in the kitchen at the other side of the house. Rachel was standing with her hand on the cooker when, without warning she felt 'a sort of thump' in her back. The other two girls saw an orange, spherical object - about the size of a table tennis ball - moving very quickly. It had no smell, made no noise and seemed to be rotating ...
Terms matched: 1 - Score: 36 - 15 May 2017 - URL: /sf064/sf064g11.htm
... Science Frontiers ONLINE No. 60: Nov-Dec 1988 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A NEW FACE ON MARS?The face on Mars does not seem to go away! Could it, after all, really be artificial? M. Carlotto, writing in Applied Optics, presents the results of his analysis of the photos of this engimatic "face." "The image enhancement results indicate that a second eye socket may be present on the right, shadowed side of the face; fine structure in the mouth suggests teeth are apparent." "Teeth?" This Martian face is becoming too human-like to be an accident of nature! Carlotto also tersely summarizes his impression of the face's features. ". .. results to date suggest that they may not be natural." (Hecht, Jeff; "Computer Does a Double-Take on the Face of Mars," New Scientist, p. 39, July 7, 1988. Also see: Applied Optics, 27:1926, 1988.) In a more light-hearted manner, P. Jones asserts that a second Martian face exists, and that somehow scientists have managed to keep it under wraps. A photo of the second face appears in the August 25, 1988, issue of New Scientist. Jones remarks on the second face as follows: "If faces are what you are looking for, it's reasonably convincing, perhaps more convincing than its better-known sibling. It has symmetry, two eyes ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf060/sf060p05.htm
... Science Frontiers ONLINE No. 61: Jan-Feb 1989 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A Truly Fortean House A host of Fortean forces descended upon a house in Orland Hills, Illinois, in 1988. "Once, a blue flame an inch in diameter shot out of a wall socket for more than 30 seconds, and the outlet still worked. That incident was witnessed by two police officers. Another time, a similar flame set a mattress afire while investigators were prowling outside. "In all, there were 26 separate incidents, all of them witnessed by either police or fire investigators... "' I was there one night when the room was filled with a white haze. I couldn't see my hand in front of my face,' Smith said. 'There was a strong sulfur smell and my eyes were burning. I took a sample (of the vapor) in a vacuum canister. We came up with nothing.' "Neither did engineers, chemists and geologists." Understandably, the occupants of this hexed house had moved out long ago with such goings-on. Teams of experts ruled out arson, natural gas, methane leaks, sewer gas, and electrical malfunctions. The house was finally bulldozed in October 1988. (Elsner, David; "Bulldozers Lay House to Rest," Chicago Tribune, October 16, 1988. Cr. K. Fabian. Also: Anonymous; "Strange Phenomena Force Bulldozing of House," Lorain (Ohio) Journal, October ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf061/sf061g17.htm