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Originally posted by ZeroGhost
Also depending on the distance to the sun a comet will not produce a tail until close enough. Holmes might produce a tail as time goes on.
Originally posted by fatman
If the Earth was determined to be in the path of a comet, what would we do?? We would try something to avoid a collision like shooting it with missles and destroying it or at least deflecting it away right?
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.
Anyone with a backyard telescope can watch it grow. After sunset, point your 'scope at the 3rd-magnitude fuzzball in the constellation Perseus: sky map. Finding the comet is no problem. The only question is, will it fit in the eyepiece?