On Feb. 18, 1930, the American astronomer Clyde Tombaugh discovered Pluto! See how it happened here in our On This Day in Space video series.
The history of space exploration is rich with photos from NASA that detail the history of space travel, breakthrough propulsion systems, groundbreaking astronauts and missions, and robotic exploration. Each weekday, SPACE.com looks back at the history of spaceflight, from the early days of the space race through the space shuttle era, from the years of the first rockets and satellites to the test-flight era that preceded human spaceflight, and of course beyond.
NASA's Apollo 12 mission sent three astronauts to the moon in November 1969 to make the second crewed lunar landing in history. See how that mission went in photos in our photo gallery here!
The first all-female crew of scientific experimenters prepare experiments that were used during the Space Shuttle/Spacelab missions.
The Apollo 9 Lunar Module is seen from the command module during the Apollo 9 earth-orbital mission.
The former NASA Assistant Administrator for Policy and former Assistant Director for Research Applications at the National Science Foundation came to NACA in 1944.
Astronaut Edward H. White II, pilot for the Gemini-Titan 4 space flight, floats in space during America’s first spacewalk.