Two planets may have gate-crash together late , resulting in one planet that ’s weirdly hot for its sizing . The major planet 2M1207B , 170 wanton years from Earth , is 1300 degrees Celsius , despite being little than Saturn , judging from its infrared radiation sickness . immature satellite are in the main hotter than older major planet , but such a small planet should have cooled off quickly . So University of Arizona astronomers claim another planet crash head - on into it , and gave us this action - packed Reconstruction Period . [ New Scientist ]
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