Science & Environment

NASA
August 20 2019
RT @Astro_Christina: Tomorrow my crewmate @AstroDrewMorgan will be going out on his first spacewalk! The main task at hand? He and @AstroHa…
NASA
August 20 2019
RT @NASA_Johnson: Everything you see on a NASA spacesuit has to be there for a good reason, right? So, do you know why astronauts wear mirr…
National Geographic
August 20 2019
RT @WeiPoints: Thousands of miles beneath your feet, our planet's inner core is doing something weird—and scientists aren't entirely sure w…