Pasadena CA (JPL) Sep 2012 - Astronomers have discovered a veritable rogues' gallery of odd exoplanets- from scorching hot worlds with molten surfaces to frigid ice balls. And while the hunt continues for the elusive blue dot
This would be a real ninth planet," says Brown, the Richard and Barbara Rosenberg Professor of Planetary Astronomy. "There have only been two true planets discovered since ancient times, and this would be a third. It's a pretty substantial chunk.