Irwin with Lunar Rover I
Apollo 15 was launched in 1971. Astronauts David Scott and James Irwin landed safely on the moon on July 30 and used a four-wheeled vehicle, Rover 1, to travel across the surface. Astronaut Alfred Worden remained in the command module, Endeavor. The crew returned safely to earth on August 7, 1971. Apollo 15 was the fourth crewed mission to land on the moon. Children can learn more at: Apollo 15.