This illustration compares the size of a gargantuan star and its surrounding dusty disk (top) to that of our solar system. Monstrous disks like this one were discovered around two 'hypergiant' stars by NASA's Spitzer Space Telescope.
Comet 'Bites the Dust' Around Dead Star (Artist Concept)
This artist's concept illustrates a comet being torn to shreds around a dead star, or white dwarf, called G29-38. NASA's Spitzer Space Telescope observed a cloud of dust around this white dwarf that may have been generated from comet disruption.
This is a Tempel 1 temperature map of the nucleus with different spatial resolutions from NASA's Deep Impact mission. The color bar in the middle gives temperature in Kelvins. The sun is to the right in all images.