Thursday, January 12, 2012

Three newfound worlds are smaller than Earth
[ Wed, 11 Jan 2012 19:46:23 GMT ]

This artist's conception depicts the newfound planetary system KOI-961, which contains three alien planets smaller than Earth. The exoplanets circle their red-dwaf host star at very close distances, so they're likely too hot to host life.Astronomers have discovered the three smallest alien planets yet, including one that's just the size of Mars.


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