Sunday, January 1, 2012

Total Eclipse - The Free Encyclopedia - Wikipedia - Eclipse

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Aneclipseis a great astronomical function that occurs whenever an astronomical object is on holiday obscured, also by simply missing out on into your shadow of another entire body as well as simply by acquiring another physique complete between it as well as viewer. An over shadow is a form of .

Etymology Umbra, penumbra and antumbra Eclipse fertility cycles Earth-Moon System Solar eclipse Lunar eclipse Historical record Other exoplanets Gas titans Mars Pluto Mercury along with Venus Eclipsing binaries See as well References

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DIO sixteen p.2 (2009). Though those Greek along with maybe Babylonian astronomers that determined the a few recently unsolved lunar stances were distribute about above five 100's of years (263 BC to 160 AD), the math-indicated beginning over shadow files tend to be just about all originating from a : the thirteenth hundred years BC. The anciently attested Greek technique: make use of eclipse cycles, on auto-pilot supplying integral ratios, which is the best way all early astronomers' lunar motions were expressed. Long-eclipse-cycle-based reconstructions correctly develop all of this twenty-four digits becoming while in the several attested historic stances simply just cited: 6247 synod = 6695 anom (System A), 5458 synod = 5923 drac (Hipparchos), 3277 synod = 3512 anom (Planetary Hypotheses). By contrast, that System B motion, 251 synod = 269 anom (Aristarchos?), could have got recently been identified not having recourse to rural eclipse data, simply by employing a couple of eclipse-pairs 4267 weeks apart.

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