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11/01/2007

Giant Comet Shines in the Night

Breaking Earth News
Comet 17P/Holmes has been relentlessly expanding since its explosion on Oct 23rd and now it spans an angle in the sky almost half as wide as the full Moon. Using a picture of the comet he took on Oct. 30th, Helmut Groell of Moers, Germany, created this animation for comparison:


Actually, the comet is even bigger than it looks. While the Moon is a mere 240 thousand miles away, Comet Holmes is 150 million miles from Earth. The comet's physical diameter is thus seven times wider than the planet Jupiter--and it is still expanding.
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