The Opportunity Mars rover sent its last signal to Earth.
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The last manned lunar flight, Apollo 17, returned to Earth.
Pale Blue Dot, an iconic photo of our Earth, was taken by Voyager 1 space probe.
A large explosion above the Pacific Ocean turned out to be a meteorite.
NASA's Explorer 49 was launched into Earth's orbit to research long-range radio waves within the Milky Way.
Asteroid 2005 YU55 came dangerously close to hitting the Earth.
