British astronomer William Lassell discovered Neptune’s largest moon, Triton.
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The Mariner 1 Space Probe was forced to self-destruct minutes after launching.
NASA launched Apollo 11 from the Kennedy Space Center.
Voyager 1 passed Pioneer 10 to become the most distant human-made object in space.
Two new moons of Saturn were found in photos from the Hubble Space Telescope by Astronomers Amanda S. Bosh and Andrew S. Rivkin.
A galaxy named 'Dwingeloo 1' was discovered to be just 10 million light-years from our own.
