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The USSR beat the United States into space by launching Sputnik 1. It was the world's first artificial satellite.
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Following the success of Sputnik 1, the Soviets launched Sputnik 2. The spacecraft contained a pressurized container which housed a dog named Laika.
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The Russian satellite Luna 1 is launched in an attempt to hit the Moon. The spacecraft misses the Moon and was flung out into space by the Moon's gravity. It became the first man-made object to achieve an orbit around the Sun.
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Russian Cosmonaut Yuri Gagarin became the first human to venture into space.
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Alexei Leonov performed the first, Tethered space walk outside of his spacecraft while in Earth’s orbit
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The Russian spacecraft Luna 9 completed a 250,000 mile trip and successfully became the first spacecraft to soft-land on the moon.
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Apollo 11 makes the first successful soft landing on the moon. Neil Armstrong and Edwin Aldrin, Jr. became the first human beings to set foot on another world
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The United States launches Skylab, the first U.S. space station. It will be occupied by three crews and be an important arena for a number of scientific experiments.
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Viking 2 lands on Mars on the Plain of Utopia, where it discovered water frost.
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The Voyager 2 spacecraft arrives
at Neptune, giving us our first
close-up views of the blue planet
and its moons.