Mike Massimino, The Firsr Tweeting Astronaut, Leaves NASA For Academia

Mission Accomplished. Now it's time to go back home.After two space shuttle missions and almost two decades, astronaut Mike Massimino has left NASA for Columbia University in New York. During the final servicing mission of the Hubble Space Telescope in 2009, Massimino became the first astronaut to tweet from space, and he now has nearly 1.3 million followers. read more

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