In Pictures: The sizzling world of asteroids

This Hubble Space Telescope picture shows a bizarre X-pattern of filamentary structures near the point-like nucleus of the object and trailing streamers of dust. Astronomers have found a comet-like object they believe was created by the collision of two asteroids, possible siblings of the rogue rock blamed for killing the dinosaurs millions of years ago. The object, known as P/2010 A2, was circling about 90 million miles (144 million km) from Earth in the main asteroid belt between Mars and Jupiter.