NASA @NASA
With the successful launch of @SpaceX Demo-1, we're on the cusp of a new era of future human spaceflight. Watch @JimBridenstine, @elonmusk & our @Commercial_Crew astronauts discuss this historic milestone: https://t.co/hYJKnIbVJR https://t.co/GPW8nHV3qf — PolitiTweet.org