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Aristotte and other Greeks think the univse was prefect.
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Ptolemy said that the planet goes in little to big as they revole Earth. That is geocentic.
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Copernicus was the first one to think a helocentric Solar Syterm. Helocentic is when the Earth revole the sun.
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Newton found that gravity and inesta what makes the planets orbit.
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Bruno was burn in the stake for believing there is different planet and star like us.
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Galio made the teilcope and supported Copernicus helocenteric thing.
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Wright thought that there are other galxies like ours.
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Herschel found Uranus, the seventh planet.
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It was the first rocket to leave Earth's atmosphere. Over time, they are trying to impove it.
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Marnier 4 was the first sussesful mission to explore Mars.
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Sputnik 1 was the first artificial satellite. Sputnik 2 crarried a dog to space and didn't survive.
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It was a satellite and a rocket lander and stayed in space till 1967.
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Glenn was the first American to orbit Earth.
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Luna 9 was a Russian spacecraft was first to land in the moon.
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Zond 5 was the first spacecraft to orbit the Moon.
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Apollo 8 carried the first people to orbit the Moon.
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Armstrong and Aldrin was first on the moon.
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They did some testing the find that there is no life on Mars. The Vikings 1 and 2 lasted for three and four years.
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Columbia was the first space shuttle but crashed in 2003.
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It was the first planet found in a star cluster.
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They bulit the space station so they can have their stuff and work there.
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Marcy and Bulter found a different solar syestem is like our Jupiter.
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Scienceists are finding new planets.