NASA @NASA
@AshleyRaeHart @AstroDuke @Astro_Wakata @Space_Station Spacewalks are limited by the amount of water and oxygen spacesuits can hold, and usually last around 6-7 hours but can go for up to two more hours. Temperatures vary from -250 degrees F (-157 C) to 250 degrees F (121 C) as the @Space_Station travels from night to day. — PolitiTweet.org