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Feb 19, 1473
Nicolaus Copernicus
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/ -
Feb 29, 1504
Columbus Predicts Lunar Eclipse
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Kepler Observes Supernova
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. -
Galileo observes moon
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/ -
Newton discovers the law of universal gravitation
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/ -
William Herschel discovers Uranus
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. -
Clyde Tombaugh discovers Pluto
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. -
Book Discovery
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/ -
Telescope
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/ -
University students find a cluster in space so unique, it has no name.
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.
