Gui Boratto - No Turning Back

This is actually not a real photo, its an artist's concept of Kuiper Belt Object 2003 UB313. An annotated version can be found here: http://www.spacetelescope.org/images/opo0616c/ Small note from YW: the papers stated that researchers confirmed that much if not all of the water on our planet comes from meteors and asteroids belonging to the Kuiper Belt, this gives a new meaning to the question whether we evolved from start to finish on this planet. So it seems perhaps not!