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Last updated on April 19, 2014 at 5:20 EDT

Transit of Venus Videos

March 22, 2012

A four-minute trailer summarizes the history and significance of the transit of Venus while preparing for June 5-6, 2012, spectacle. Story traces its value from early expeditions seeking to measure the size of the solar system, to similarities with transits around distant stars being detected by the Kepler spacecraft.  credit:  NASA