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SUsing a new tool to study more than 100 stars once thought to be devoid of planets, the Swiss-French team found that about one-third had planets that are only slightly bigger than Earth.

That's how the star with three super-Earths, 42 light-years away, was spotted. The European team took a second look with a relatively new instrument that measures tiny changes in light wave lengths and is so sensitive that it is precisely positioned and locked in a special room below the observatory in Chile. And the key is kept in Switzerlandcientists have discovered what they're dubbing "super-Earths" circling a star 42-light years away. That's an artist's depiction of what they might look like if they were identical in appearance to earth and weren't actually pink with purple polka-dots like I know they are. Three have been identified so far, and they were detected not by sight, but by the effects they have on the star they orbit.

Scientists Discover 'Super-Earths' 42-Light Years Away [geekologie]