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Kepler's Laws of Motion were created after the first few models of the Solar System. These laws were used to accurately determine how planets orbited around a center of gravity.
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This was the first viewing of the Earth's moon via telescope by the astronomer Galileo Galilei.
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The USSR launches their first rocket that contributes to the research to create a rocket capable of making it out of orbit and into space.
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The Soviet Union launched the first artificial satelite (Sputnik I) that was able to orbit the Earth and send radio waves back.
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The first ballistics missile was created by the USSR able to launch and fire.
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The first human to be in space (USSR) was in 1961 showing that missions could be carried out and be humanly controlled allowing them to sample and take pictures of the surrounding area of space including the moon.
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The first sighting of the planet Mars was in 1965 and showed astronomers and researchers what the physical character looked like, and how far it was away for future launches.
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The first satellite to be put around the orbit of the moon by the USSR.
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The first successful mission to arrive on the moon (Apollo 11), by Neil Armstrong and his crew.
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In 1971 the first Space Station, Mir, arrived in Earth's Orbit from the USSR.
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The first man controlled Space Shuttle that was launched by the U.S.
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The first spacecraft to go past the orbit of Neptune and on to explore past our closest planets done by U.S. NASA.
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The first picture showing the entirety of our Solar System showing us stars, all the planets, and the scale of distance.
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The first satellite to orbit an asteroid done by the U.S. NASA
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The first sample of an asteroid to be taken and tested. Sample was taken by the Japanese spacecraft Hayabusa 2.
