Photos: Humans making history in space

Sally Ride became the first American woman to go into space on June 18, 1983, on the second flight for the Space Shuttle Challenger. Pictured, Ride floats alongside the middeck airlock hatch. Here's a look at some other milestones in space:

Sally Ride became the first American woman to go into space on June 18, 1983, on the second flight for the Space Shuttle Challenger. Pictured, Ride floats alongside the middeck airlock hatch. Here's a look at some other milestones in space: