This video is made of images made by the Hubble telescope on january 2010, showing an object in a satellite belt between Mars and Jupiter, which is definitely not a comet.

Scientists report : “What is this strange object? First discovered on ground based LINEAR images on January 6, the object (now named P/2010 A2) appeared unusual enough to investigate further with the Hubble Space Telescope last week. What Hubble saw indicates that P/2010 A2 is unlike any object ever seen before. At first glance, the object appears to have the tail of acomet . Close inspection, however, shows a 140-meter nucleus offset from the tail center, very unusual structure near the nucleus, and no discernable gas in the tail.”