NASA @NASA
On and off the Earth, it's important to take care of yourself. In this week's #SpaceToGround, Chris Cassidy of @NASA_Astronauts talks about how @Space_Station crews are kept safe before launch. Plus, veteran astronauts give advice on coping with isolation: https://t.co/4CxR3IBZd6 https://t.co/0HED32Wojf — PolitiTweet.org