mercury program
- n a program of rocket-powered flights undertaken by US between 1961 and 1963 with the goal of putting a man in orbit around the earth
mercury program :
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- Deke Slayton: Mercury Astronaut Who Waited To Fly
Deke Slayton was selected for the Mercury program, but had to wait more than a decade to fly in space after concerns about an erratic heartbeat pulled him out of the flight rotation.
Jan. 30, 2014 - SPACE.com