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copernicus (1625-1712)- Giovanni Domenico Cassini was an Italian mathematician,astronomer and engineer. discovered the Cassini Division, rings of moons of saturn's moons
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Hipparchus -(1990 -120 bc) considered the founder of trigonometry but most famous for his incidental of precession of the equinoxes and he discovered the distance from the sun and moon
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ptolemy-(100-170 AD) was a mathematician ,and an astronomer ,geographer
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Aristotle astronomy- (384-322 bc) believed earth was round and it was in the center of the universe
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kepelr (1594)Johannes Kepler was a German mathematician, astronomer, and astrologer. Kepler is a key figure in the 17th-century scientific revolution
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Sir isaac newton-(1642-1727)-3 laws of motion , further developed works of copernicus and kepler
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Cassini orbiter -(1675)Huygens mission, commonly called Cassini, was a collaboration between NASA,
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William herschel -(1738-1822)-discovered the planet uranus and its moons he also discovered 2 more of saturn's he determined the temperatures of color
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Ejnar hertzsprung (1873-1976) was a Danish chemist and astronomer, was a Danish chemist and astronomer
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Percival lowell-(1855-1916)-discovered the planet pluto and studied the “canals on mars . he built the lowell observatory
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Albert einstein (1879-1955)theoretical physicist who developed the theory of relativity, one of the two pillars of modern physics.
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Edwin hubble-(1889-1953)-. He played a crucial role in establishing the fields of extragalactic astronomy he regarded as one of the most important astronomers of all time.and the expansion of the universe
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Karl jansky -(1905-1950)-He built an antenna and he discovered the radio waves emanating from space he also discovered elliptical (that the planets orbit a oval not a perfect circle )
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sputnik-(1957)-russia sent the first satellite put into space this also changed it educating and using more in math and science
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Yuri gagarin-(1961) first human (soviet) to orbit the earth 108 minutes
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John glenn-(1962)first u.s. Citizen to orbit earth 3x
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Neil armstrong -(1969)-first person to step on the moon
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Apollo missions -(1963-1972)-to land people on the moon and bring them back
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First space shuttle flight -(1981) the name of it was columbia when the space shuttle goes up it breaks apart then when it comes down it lands like an airplane
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(1997) Mars Pathfinder was launched December 4, 1996 and It was designed as a technology demonstration of a new way to deliver an instrumented lander and the first-ever robotic rover to the surface of the red planet.
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spaceX falcon heavy-(2018)Falcon Heavy is a partially reusable super heavy-lift launch vehicle designed
