How the Universe Works (2010)
S3E9 The Search for a Second Earth
Episode Overview
Could there be another Earth somewhere in the universe, complete with liquid oceans, solid landmasses, and life as we know it? Astronomers are on a quest to uncover this mystery using techniques such as spectroscopy, direct imaging, and advanced telescopes. Their goal is to discover indications of atmospheres, magnetospheres, and potential signs of extraterrestrial life.
HD
S3