|Earth completes its orbit around the sun every 365.2422 days.|
NASA is so confident that the world won't end on December 21, 2012 that they have released their Why the World Didn't End Yesterday 12-22-12 video on the day of the supposed apocalypse. The video explains why the Mayan doomsday fears are based on inaccuracies. NASA also reassures the general public that there is no comet or rogue planet on the way that would destroy Earth on December 21, 2012. NASA also says the Sun is behaving normally.
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