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Proposed that the sun was stationary in the centre of the universe and the earth revolved around it
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Developed the Tychonian Quadrant that measure and fixes the position of the stars, one of which being
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Discovered the three major laws of planetary motion
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Formulated the theory of universal gracity
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Accidentally discovered Uranus
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Announced the invariability of planetary means motion (average angular velocity)
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Discovered Pluto by predicting the existence of a planet beyond the orbit of Neptune
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Discovered a relationship between period and luminosity (pulsating stars)
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Determined the galactic centre of the milky way
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Developed theoretical models of the universe based on Albert einstein's general theory of relativity
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Had made a theory that space and time were intertwined in an infinite "fabric" and the theory of relativity
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Formulated the idea of the big bang theory and he called "hypothesis of the primeval atom" or the "cosmic egg"
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Discovered that the universe is expanding and countless galaxies exist beyond our own milky way
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Proved that the great majority of natural elements in the periodic table were made inside stars and distributed through space by supernova explosions
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Discovered the CMB (cosmic microwave background radiation)