Three Russian cosmonauts returned from space after spending a record time of 237 days in orbit.
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Robert H. Lawrence, Jr. was selected as the first African-American astronaut.
Space probe Osiris-Rex by NASA was launched to collect rock samples from the Bennu asteroid.
The Soviet Union's Vega 1 Space Probe began sending back images of Halley's Comet.
A powerful meteor exploded over the Bering Sea.
Astronomer Richard Walker discovered Saturn's moon, Epimetheus.
