Liftoff of MR-4 (Mercury-Redstone), Liberty Bell 7, on July 21, 1961. MR-4 mission was the second marned suborbital flight and carried Astronaut Virgil Grissom aboard the Liberty Bell 7 spacecraft in space for a duration of 15-1/2 minutes.
Liftoff of MR-4 (Mercury-Redstone), Liberty Bell 7, on July 21, 1961. MR-4 mission was the second marned suborbital flight and carried Astronaut Virgil Grissom aboard the Liberty Bell 7 spacecraft in space for a duration of 15-1/2 minutes.