NASA’s Voyager 1 spacecraft entered interstellar space, becoming the first artificial object to do so.
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Odysseus became the first private spacecraft to land on the Moon.
NASA lost radio contact with the Mars Polar Lander moments before the spacecraft entered the Martian atmosphere.
Syncom 2, the world's first geosynchronous communications satellite is launched.
The Rosetta Philae became the first-ever probe to land on a moving comet.
The crew of Skylab 4 returned to Earth.
