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First artificial satelite; First signals from space
The USSR sent Sputnik 1 into space and it became the first artificial satelite and it gave the first signals from space. -
First animal in orbit
The USSR Sputnik 2 sent a dog named Laika into orbit around the Earth. -
First Human Space Flight; First Orbital Flight of a Manned Vehicle.
Yuri Gagarin in the USSR's Vostok 1 had first human spacefilght. -
First Pilot-controlled space flight.
The US's Freedom 7 had Alan Shepard pilot the first human piloted space craft. -
First orbital solar observatory
The US sent out the OSO-1-NASA which was the first orbital observatory. -
First human-crewed spaceflight to, and orbit of, another celestial object: the Moon
The US's Apollo 8-NASA orbited the moon for the first time. -
First crew exchange in space
The USSR's Soyuz 4 and 5 had the first crew exchange in space. -
First humans on the Moon; First space launch from another celestial body
The US's Apollo 11-NASA was the first mission that had humans land on the moon and lift off from the moon. -
First Jupiter flyby
The US's Pioneer 10-NASA flew by Jupiter. -
First multinational human-crewed mission
Both the US's and the USSR's ships did this with the Soyuz 19 and the Apollo–Soyuz Test Project.