Congratulations to the @Space_Station crew on a successful spacewalk today! Yesterday suit engineers helped me complete my suit fit check -- a first step in my own long road to becoming qualified.

Professor Hawking was an incredible scientist, personality, and educator. Long may his remarkable story and work inspire us to look past our own front door.

Visiting the #J85 engines in the hangar is always a treat. These engines can produce nearly 5000 lbf thrust with afterburner (each!). That’s some concentrated kick.

Three Expedition 54 crew members are scheduled to dock to the station’s Rassvet module at 3:43 a.m. EST Tuesday, Dec. 19. go.nasa.gov/2B9zKPf

Was quite humbling learning from @Tungsten_Flight about the placement of Apollo 1, Challenger, and Columbia patches in mission control. nitter.vloup.ch/Tungsten_Flight/…