Analyse @NASA's tweets
LIVE: @AstroBehnken & @Astro_Doug answer questions about their @Commercial_Crew flight to @Space_Station aboard the @SpaceX Dragon Endeavour spacecraft.
Watch: https://t.co/b5yk5IAL04 https://t.co/b5yk5IAL04
Watch: https://t.co/b5yk5IAL04 https://t.co/b5yk5IAL04