NASA @NASA
It's spacewalk season on the @Space_Station. We take a look back at two spacewalks that replaced old batteries with new ones, and a look ahead to a third one coming on April 8th. Watch & ask your questions with #SpaceToGround: https://t.co/UcaiWv1bvR https://t.co/PU5p7YUCEd — PolitiTweet.org