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He formulated a heliocentric model of the universe which placed the sun, rather than the earth, at the center.
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He designed and built new instruments, calibrated them, and institued nightly observation.
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He invented the telescope. He could now look at the sky in a new way. This invention helped support Copernicus's therory.
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He developed Kepler's 3 laws of planetary motion.
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He was an Italian/French mathamatician, astronomer, engineer, and astrologer. He discoverd four satelilites of the planet Saturn.
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He discovered Gravity. He belived that some forces pushed the planets together. He belived that a moving object will continue to move at a constent speed and in a straight line. This is called inertia.
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He computed the orbit of eponymous Halley's Comet.
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He is most notable for publishing an astronomical catalngue consisting of nebula and star clusters that cameto be known as the 110 "Messier Objects" A messier object is a set of astronomical object first listed by Charles Messier.
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He was a Hanoverian-born British astronomer, technical expert, and composer. He also discoverd Uranus and infrared radiation.
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She was an American astronomer whose catalonging work was instrumental in the development of contemporary stellar classification.
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He was a German-born theoretical physicist. He developed the general theory of relativity, one of the two pillars of modern physics.
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He was an American astronomer who played a crucial role in establishing the field of extragalactic astronomy and is generally regarded as one of the most important observational cosmologist of the 20th century.
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He is an American astronomer and astrophyscist. He is most noble as one of the pioneers in the search for extraterrestrial intelligence.
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He was an American astronomer, asrophysicist, cosmologist, author, science popularizer and science communicator in astronomy and natural sciences.
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He is an English theoretical physcist, cosmologist, author and director of research at the Centre for Theoretical Cosmology within the University of Cambridge.
