Secretive space plane lands after 718 days circling Earth

The unmanned orbital test craft returned to NASA's Kennedy Space Center after spending nearly two year in space. Subscribe to CNET: http://cnet.co/2heRhep Check out our playlists: http://cnet.co/2g8kcf4 Like us on Facebook: http://ift.tt/1930vfU Follow us on Twitter: https://www.twitter.com/cnet Follow us on Instagram: http://bit.ly/2icCYYm Add us on Snapchat: http://cnet.co/2h4uoK3
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