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Vostok-1 (USSR)
Cosmonaut Yuri Garagin became the first human in space. -
Period: to
Manned Space Missions
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Mercury-3 (USA)
Alan Shepard became the first American in space during a fifteen minute sub-orbital flight -
Mercury-4 (USA
The second US sub-orbital flight, reaching an altitude of 126 miles -
Vostok-2 (USSR)
Titov was the first to spend an entire day in space. -
Mercury-6 (USA)
The first US manned orbital flight at an orbit 100-162 miles from the Earth. -
Mercury-7 (USA)
The second US manned orbital flight which orbited the Earth three times. -
Vostok-3 (USSR)
First four-day flight and first "group" flight with Vostok-4. -
STS-39 (USA)
This unclassified Department of Defense Shuttle mission was devoted to military scientific experiments.