The Rosetta mission’s historic landing of a robotic spacecraft on a comet has brought to a head one of humankind’s timeless questions: are we alone in the universe? For the project’s leading land scientist, that answer may soon be on the horizon. FULL STORY: http://on.rt.com/sgvhfd<br /><br />RT LIVE http://rt.com/on-air<br /><br />Subscribe to RT! http://www.youtube.com/subscription_center?add_user=RussiaToday<br /><br />Like us on Facebook http://www.facebook.com/RTnews<br />Follow us on Twitter http://twitter.com/RT_com<br />Follow us on Instagram http://instagram.com/rt<br />Follow us on Google+ http://plus.google.com/+RT<br /><br />RT (Russia Today) is a global news network broadcasting from Moscow and Washington studios. RT is the first news channel to break the 1 billion YouTube views benchmark.
