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Copernicus formuated the Heliocentric model of the universe which placed the sun in the center rather than the Earth
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Brahe is best known for his accurate and comprehensive astronomical planetary observations
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Galilie played an important role during the scientific revolution which were his advancements in the telescope and made observations to support Copernicanism.
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Kepler was best known for his laws of planetary motion in the universe which provided a foundation for Newton's theory of universal gravitation
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Cassini was known for his work in the fields of astronomy and engineering and most notably discovered four satellites of Saturn and noted the division of Saturn's rings
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Newton was an English physist who was the most infleuntal scientist of all time and had a key role in the scientific revolution. He formulated the laws of motion and universal gravitation.
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Halley was best known for computing the orbit of the eponymous Halley's Comet.
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Messier published a catolog consisting of the nubula and star clusters which came to be known as the 110 Messier Objects. The purpose of it was to distinguish between permanent and transient visually diffuse objects in the sky.
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Herschel became famous for his discovery of Uranus along with 2 of its major moons.
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Annie's was intrumental in the development of contempory stellar classification. She also created the Harvard Classification Scheme
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Einstein developed a general theory of relativity and was most know for his mass-energy equivalene: E=mc2
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Hubble has a crucial role in establishing the feild of extragalatic astronomy and came up with the theory that the universe is expanding
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Drake was known for his search of extraterestrial intelligence including the founding of the SETI
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Sagen discovered the high surface temperatures on Venus, but is best known for his contributions to scientific research of extraterrestial life
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Hawking was known for his research for theortical cosmology.
