To understand the the long-term effects of space on the human body, NASA is conducting an experiment involving twins! Join Tara as she explains what they hope to learn by sending one twin to space, but not the other. Read More: NASA To Conduct Unprecedented Twin Experiment phys.org/news/2014-04-nasa-unprecedented-twin.html "Consider a pair of brothers, identical twins. One gets a job as an astronaut and rockets into space. The other gets a job as an astronaut, too, but on this occasion he decides to stay home. After a year in space, the traveling twin returns home and they reunite." Watch More: Can A Stranger Look Like Me? www.youtube.com/watch?v=chp7pYZcQCE TestTube Wild Card testtube.com/dnews/dnews-437-pets-make-us-healthier?utm_campaign=DNWC&utm_medium=DNews&utm_source=YT Is Time Travel Possible? www.youtube.com/watch?v=I5bvjL6h6nY ____________________ DNews is dedicated to satisfying your curiosity and to bringing you mind-bending stories & perspectives you won't find anywhere else! New videos twice daily. Watch More DNews on TestTube testtube.com/dnews Subscribe now! www.youtube.com/subscription_center?add_user=dnewschannel DNews on Twitter twitter.com/dnews Trace Dominguez on Twitter twitter.com/tracedominguez Tara Long on Twitter twitter.com/TaraLongest Laci Green on Twitter twitter.com/gogreen18 DNews on Facebook facebook.com/DiscoveryNews DNews on Google+ gplus.to/dnews Discovery News discoverynews.com Download the TestTube App: testu.be/1ndmmMq

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