Astronomers are thrilled with the discovery of a new planet. Why does this matter? Prof. Michael Shara tells CNN's Jonathan Mann.
원문출처 : http://www.cnn.com/videos/tech/2016/08/27/proxima-b-orbits-cnni-mann-intv.cnn
원문출처 : http://www.cnn.com/videos/tech/2016/08/27/proxima-b-orbits-cnni-mann-intv.cnn