Summary: Carl Zimmer (<a href="https://twitter.com/statnews?lang=en" target="_blank">@STATnews</a>), National Correspondent for <a href="https://www.statnews.com/" target="_blank">STAT News</a>, discusses Scott Kelly's recent year long stay on the International Space Station. NASA hopes to gain piles of data from this venture, such as how things like zero gravity and exposure to cosmic rays affect the human body over time. This information would be extremely helpful on future missions aiming for far off destinations - Mars, in particular.
