Apollo 1 test launch failed, and astronauts Gus Grissom, Ed White, and Roger B. Chaffee all died.
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NASA's Columbia Space Shuttle landed at the Kennedy Space Center, concluding mission STS-90.
Cassini orbiter released the Huygens probe, which successfully landed on Saturn's moon Titan.
Venera 7 launched by the Soviet Union.
STS 77 (Endeavour 11) was launched into orbit.
The crew of Skylab 4 returned to Earth.
