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This artist's concept illustrates a comet being torn to shreds around a dead star, or white dwarf, called G29-38. The Spitzer Space Telescope observed a cloud of dust around this white dwarf that may have been generated from this type of comet disruption. The findings suggest that a host of other comet survivors may still orbit in this long-dead solar system.... (KEYSTONE/STOCKTREK/Stocktrek Images)