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Proved the earth was a spherical shape and everything revolved around the Earth.
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He composed the very first star catalog to track all the stars and the constellations. He also calculated the exact distance from the earth to the sun.
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Made manuals that track the moon and sun’s movement. He relied on Hipparchus’s work for the catalog.
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Revival of art, literature and learning. Nicolaus Copernicus is an astronomer that noticed a concept that the sun is in the center.
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Known for his accurate and detailed astronomical observations.
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An Italian astronomer that invented the first telescope, discovered sunspots and Jupiter’s moons.
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An astronomer from western Germany that invented the very first telescope.
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He worked of Kepler’s work and invented the reflecting telescope.
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An astronomer who found the separation between Saturn's rings.
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He discovered Uranus, 2 more of Saturn’s moons and believed Mars had water.
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Discovered Pluto and built the Lowell observatory in Flagstaff, Arizona.
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Invented the Hertzsprung_Russel diagram. It shows the correlation between the brightness of stars.
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Theory of relativity and gravitation.
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Using the color of stars, he discovered the universe is expanding, called Hubble’s Law.
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Discovered radio waves that emanate from space. Radio Waves are huge amounts of energy.
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A small satellite that Russia put in space which led other countries to make satellites too.
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First human to orbit the entire earth in 108 minutes. He was also from Soviet Russia.
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The first United States citizen to orbit the moon three times.
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First man to walk on the face of the moon.
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A program designed to land people on the moon and orbit astronauts around the moon.
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Space shuttle Columbia was the first reusable space craft.
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The rover was launched in 1996 and it landed on mars in 1997.