NASA @NASA
@NASA_Astronauts @Space_Station For our upcoming marathon of 10 spacewalks, all of the spacewalkers prefer to use a medium size, so 2 medium suits are ready! #DYK if you factor in prep time + 6.5 hours of spacewalking, an astronaut burns ~1,500-2,500 calories? That’s about equal to running 2/3 of a marathon! https://t.co/BzPmjVz9hI — PolitiTweet.org