NASA @NASA
After 27 months of collecting data, the results are in! š¤ Discover what we learned about the impacts of spaceflight by comparing the DNA of identical twins as one astronaut spent 340 days aboard the @Space_Station while the other remained on Earth: https://t.co/BKEoyfYlpc https://t.co/ecOaWgqPXA — PolitiTweet.org