Kepler spots exoplanet with longest year yet - 704 days

July 24, 2014 8:31 AM

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Kepler 421b - an exoplanet with a year nearly as long as Mars, has been discovered in data from the Kepler Spacecraft.(Photo : David A. Aguilar (CfA))

Data from the Kepler Observatory was used to discover another exoplanet, this one with the longest year yet found - 704 days. Kepler 421b has an orbit just slightly shorter than Mars, which revolves around the sun once every 780 days.

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