The Opportunity Mars rover sent its last signal to Earth.
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NASA launched the Phoenix spaceship from the Cape Canaveral Air Force Station, Florida, US.
A large explosion above the Pacific Ocean turned out to be a meteorite.
A meteorite that landed in Australia in the 1960s revealed stardust up to 7 billion years old.
NASA lost contact with the Mars Observer spacecraft.
An asteroid, dubbed 'City Killer,' came closer to Earth than the moon and was almost undetected.
