NASA @NASA
Today's #spacewalk has concluded after 6 hours, 31 mins. @Astro_Ricky & @Astro_Feustel spent the time swapping a pair of thermal control devices that control the circulation of ammonia keeping external @Space_Station systems and more. Details: https://t.co/RGKsBeN6o8 https://t.co/PlNgdn2uEp — PolitiTweet.org