Life in Our Universe
Has Mars Always Been Dead?
S1 • E10 May 10, 2012 29m
Mars ranks as NASA's number one priority in the search for exolife. Here, you delve into why Mars is so intriguing to astrobiologists and what the search has found to date. Start with a comparison of Mars and the Earth, then watch the first-ever observation of water ice on Mars sublimating into vapor.