#OnThisDay in 1983, Sally Ride became the first American woman in space. The 32-year-old physicist beat out more than 1,000 applicants to become an astronaut and travel aboard the Space Shuttle Challenger. After that initial six-day mission, Ride returned to space for a second mission in 1984. (📷: Getty/National Archives) #sallyride#womenshistory#space#NASA#usa#history#spaceshuttlechallenger#stanford#astronaut