Kepler finds exoplanet with longest known year

July 24, 2014 11:01 AM

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The Kepler spacecraft was distinctively suited to make this discovery.

According to a report from the Harvard-Smithsonian Center for Astrophysics (CfA), astronomers recently discovered a transiting exoplanet with the longest known year. The exoplanet, Kepler-421b, circles its star once every 704 days. In comparison, Mars orbits the sun once every 780 days. Most of t...

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