US to analyze genetic data from ‘Space Twins’03:56
Christopher Mason, a geneticist at Weill Cornell Medical College, talks to Alex Witt about the Space Twins study and how it will give scientists a better understanding of the human body’s reaction to space.
NASA Administrator on climate change, humans on Mars, and aliens08:45
Web Extra: Taking people to space is Jeff Bezos's next big mission01:33
Former astronaut Mark Kelly running for AZ Senate seat04:31
Trump loves space, but doesn't quite get how it works03:15
Does private space travel mark a new era or just a new luxury travel trend?03:37
NASA spacecraft lands on Mars03:41