
NASA @NASA
Could Earth-based microbes survive a trip to Mars? Yes! That’s why we made sure our @NASAPersevere rover met cleanliness requirements before leaving our home planet. Dr. Moogega Cooper of @NASAJPL is here to fill us in: https://t.co/6FeUvSDXW0 #CountdownToMars https://t.co/UUAHK4SCxJ — PolitiTweet.org