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Last updated on April 23, 2014 at 12:31 EDT

Super-Earth Reveals Itself to Spitzer

May 9, 2012

This artist’s animation depicts 55 Cancri e as it orbits its star. The planet whips around the star closely and quickly: It is 25 times closer to the star than Mercury is to our sun and completes one orbit — its year — in a mere 18 hours.  credit:  NASA