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Polish astronomer that declared that the sun, not the Earth was at the center of the universe. https://newsela.com/articles/BHP-U2-3-NicolausCopernicus/id/3586/
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The telescope was invented a few years after Kepler carried out extensive naked-eye observations of the supernova of 1604. Since the invention of the telescope no supernovas have been observed in the Milky Way.
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Galileo found that the Moon had mountains, valleys, and plains like the Earth. He called the dark regions of the Moon maria, the Latin word for seas. https://newsela.com/articles/BHP-U2-2-GalileoGalilei/id/3579/
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The law of universal gravitation laid the foundation for our current understanding of physics and the Universe. https://newsela.com/articles/BHP-U2-4-IsaacNewton/id/3596/
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While measuring the directions and brightnesses of stars, Herschel found a fuzzy spot that moved among the stars. This was Uranus, the first planet that was not known to the ancients.
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Tombaugh discovered Pluto by comparing photographic plates taken of the same region of the sky about a week apart. Pluto's image moved among the stars.
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13 C oldest surviving text about astronomy what Josue disovered
Josue Saenz discovers ancient astronomy manuscript 1965 https://newsela.com/articles/BHP-U2-3-NicolausCopernicus/id/3586/ -
A crippled telescope hits the planetary jackpot! At this time the telescope discovered 715 confirmed planets, which triples Kepler's previous total of 246 in the Milky Way Galaxy. https://newsela.com/articles/kepler-planets/id/2893/
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They argue it is the intensely starry remains of one galaxy that has been consumed by another. It was found by a 21 year old undergrad student from San Jose state.
