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Newton made up the laws of motion, law of universal gravitation and basis for classical physics
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He developed a cosmogony—a theory concerning the origin of the universe: the stars originally were scattered throughout infinite space, in which attractive forces gradually organized them into even more fragmented and tightly packed clusters.
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French astronomer Pierre-Simon Laplace publishes his nebular hypothesis, arguing that the planets formed from a mass of incandescent gas
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American astronomer who predicted the existence of a planet beyond the orbit of Neptune and initiated the search that ended in the discovery of Pluto.
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He proved that our solar system is only a peripheral member of our galaxy.
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She discovered the relation between the luminosity and the period of Cepheid variable stars.
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He developed theoretical models of the universe based on Albert Einstein’s general theory of relativity.
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Belgian astronomer and cosmologist who formulated the modern big-bang theory, which holds that the universe began in a cataclysmic explosion of a small, primeval “super-atom.”
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His equations predicted that the universe is dynamic—expanding or contracting. This contradicted the prevailing view that the universe was static, so he reluctantly introduced a “cosmological term” to stabilize his model of the universe.
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He discovered that all galaxies seemed to be receding from us with velocities that increased in proportion to their distance from us - a relationship now known as Hubble's Law.
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His theory holds both that the universe is expanding and that matter is being continuously created to keep the mean density of matter in space constant.
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They discovered the cosmic microwave background radiation (CMB), the ancient light that began saturating the universe 380,000 years after its creation.