At just 0.010AU from Earth, 4179 Toutatis became the closest asteroid to Earth in the last century.
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The US spacecraft, Voyager, took the first-ever photograph of the moon and Earth together from space.
NASA's Explorer 6 satellite launched from Cape Canaveral, Florida.
John Glenn became the first American to orbit planet Earth.
The Opportunity Mars rover sent its last signal to Earth.
NASA's Explorer 49 was launched into Earth's orbit to research long-range radio waves within the Milky Way.
