Mercury Project
Assisted by Astronaut John Glenn, Astronaut Virgil Grissom enters the Mercury capsule, Liberty Bell 7, for the MR-4 mission on July 21, 1961. Boosted by the Mercury-Redstone vehicle, the MR-4 mission was the second manned suborbital flight.
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Details
NASA ID
6116423
Date Created
July 21, 1961
Center
MSFC
Media Type
image
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