Astrophysics: Optical and Infrared by N. Carleton

By N. Carleton

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It is fairly evident that what the observer saw … was the comparatively bright north polar region, partly illuminated even though in the Earth’s shadow”. ” Another eclipse of unusual aspect and well observed from sea was that of January 29–30, 1953. The unusual feature of this event was a system of multiple colored bands crossing the face of the eclipsed Moon and well observed from ships at sea. Some 18 ships reported seeing the eclipse, of which six saw the full total phase. All six of these reported the unusual color display.

P. Malet, wrote that “from Killin, on Loch Tay, the shadow on the Moon had no form similar to that given by ‘H. ’ and suggested that the alleged peculiarities reported were due to nothing more exotic than clouds. Maybe, but the persistence of the effect would tend to count against this as well as the insistence of both ‘H. ’ and ‘M. ’ that the sky was clear (excepting the transitory cumulus cloud early in the first correspondent’s observation)”. The fact that the eclipse appeared “normal” from Killin does hint strongly, however, that the effect was “local” in some way, either a trick of the atmosphere or some perceptual oddity … although who knows what this may have been!

Two proto-planets collide and the Moon is formed. © William K. Hartmann, March 2003. Resent research suggests that a moonless Earth may be a far less congenial alternative than we might imagine. In 2004, British geologist Dave Waltham found evidence that Earth is very finely balanced between enormous changes in its axial tilt accompanied, on one side of the scale, by a dramatic increase in its period of rotation and, on the other, by an equally dramatic spin-up of its rotational velocity. Without going into the intricate details (anyone desirous of studying these is directed to Astrobiology 4, pages 460–468, where Waltham’s paper “Anthropic Selection of the Moon’s Mass” is published), Waltham concludes that it is the Moon’s presence that keeps our planet poised on this narrow balance.

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Astrophysics: Optical and Infrared by N. Carleton
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