Self-destructing comet to flash close by 10:30 24 April 2006 NewScientist.com news service Kimm Groshong Astronomers will soon be treated to a close-up celestial show, with a fragmenting comet streaming across the sky in more than 30 chunks. Comet 73P/Schwassmann-Wachmann 3 has been breaking up since 1995, but between 12 and 14 May will come closer to the Earth than any comet since 1983. Fortunately no threat is posed to Earth since, even at its closest, the nearest of the pieces will be twenty times more distant than the Moon. But astronomers around the world will take advantage of the...