A big asteroid will fly by Earth, but NASA says don't worry -- we'll be safe. CNN's Rachel Crane reports.
원문출처 : http://edition.cnn.com/video/data/2.0/video/us/2015/01/23/orig-crane-asteroid-earth-fly-by-nasa.cnn.html?eref=edition
원문출처 : http://edition.cnn.com/video/data/2.0/video/us/2015/01/23/orig-crane-asteroid-earth-fly-by-nasa.cnn.html?eref=edition