NASA @NASA
How can we design a tiny helicopter to fly autonomously in the thin atmosphere of Mars? π π΄ For a new tech demo, set to travel with our Mars 2020 rover, @NASAAero experts and @NASAJPL engineers are solving the problems of flight on another planet: https://t.co/ioWxn7l91m https://t.co/jMyY3kRDzo — PolitiTweet.org