Robert H. Lawrence, Jr. was selected as the first African-American astronaut.
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NASA's New Horizons space probe completed the first flyby of Pluto in the history of human spaceflight.
Astronauts on Apollo 15 discovered a rock that could date back to the birth of the moon.
Astronomer William Herschel first observed Uranus.
Danish astronomer Tycho Brahe witnessed the supernova SN 1572.
NASA's Endeavour Space Shuttle was launched through Mission STS-61.
