On March 24, 1961, NASA’s Mercury Redstone rocket launched on its last uncrewed flight before it started sending astronauts into space. The mission was known as the Mercury Redstone Booster Development flight, and it wasn’t originally planned as part of the Mercury Program. The previous Mercury Redstone flight carried a chimpanzee named Ham into space.
Ham made it back alive, but the rocket had several issues during the flight. So, NASA made some changes to the design and tested it one more time to make sure it was safe enough for human astronauts.
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- America’s First Spaceship: Project Mercury (Infographic)
- Project Mercury: Photos of NASA’s 1st Manned Spaceflights
The Mercury Redstone rocket lifted off from Cape Canaveral and traveled more than 300 miles (nearly 500 kilometers) downrange and reached an altitude of nearly 112 miles (180 km) before splashing into the Atlantic Ocean.
The mission lasted 8 minutes and 23 seconds. It was deemed a success and cleared the way for Alan Shepard’s historic first flight to space.
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