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National Aeronautics and Space Administration
Redstone MRLV | Mercury-Redstone 4
Recorded mission coverage
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Mission brief
The flight at a glance.
Mercury-Redstone 4 was the second United States human spaceflight, on July 21, 1961. The suborbital Project Mercury flight was launched with a Mercury-Redstone Launch Vehicle, MRLV-8. The spacecraft, Mercury capsule #11, was nicknamed the Liberty Bell 7, and it was piloted by the astronaut Virgil "Gus" Grissom.
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Planned timings relative to the target. These steps do not indicate live progress.
A flight sequence has not been published for this mission.