An object within the outer photo voltaic system seems to have had an enormous chunk taken out of it in a violent collision, regardless of such impacts being uncommon at this distance from the solar.
Flavia Rommel on the Federal University of Technology in Brazil and her colleagues enlisted the assistance of a whole lot of beginner astronomers to check the distant world 2002 MS4, discovered past Neptune’s orbit within the Kuiper belt. The so-called trans-Neptunian object (TNO), found in 2002, …
Source: www.newscientist.com