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Category Archives: Historical
Historical Astronomers in Context
Johannes Kepler (December 27, 1571- November 15, 1630) Johannes Kepler was initially hired as Tycho Brahe’s apprenctice. When Tycho died, Kepler was left to make sense of his observations; after years of analyzing them and trying to make sense of them in terms of circular orbits, he finally realized that planetary orbits are ellipses, not circles. […]
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Historical Astronomers in Context
Galileo Galilei Galileo Galilei is important to astronomy for several reasons. Although he often receives credit for inventing the telescope, he did not actually do that. He did, however, greatly improve upon them, to such an extent that they could be used to peer far into space. His other great contributions were being the first […]
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Historical Astronomers in Context – Johannes Kepler
Johannes Kepler (1571-1630) was a 17th century astronomer born in the city of Weil der Stadt in the Holy Roman Empire, in what is today Germany. He is best known for his discovery of the elliptical orbits of planets and his planetary laws of motion. These three laws explained that the planets orbited the sun […]
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Nicholas Copernicus in Context
Historical Figures Copernicus: February 19, 1473 – May 24, 1543 Johannes Kepler: December 27, 1571 – November 15, 1630 Tycho Brahe: December 14, 1546 – October 24, 1601 Galileo Galilei: […]
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Historical Astronomers in Context
Tycho Brahe: Tycho’s primary contribution to astronomy is his collection of stellar and planetary observations. Accurate to within one arcminute, Tycho’s naked eye observations were unprecedented in quality. Tycho proved that comets lay in the realm of the heavens and sought to improve upon the current model of the solar system. Although Tycho never lived […]
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Tycho Brahe: Historical Astronomers in Context
sweet mustache! the 411 on Tycho Brahe: Brahe proposed a theory different than the one we support today (where the Moon orbits the Earth which orbits the Sun with the other planets) ; Brahe supported a geo-heliocentric solar system with the Moon and the Sun orbiting Earth and the remaining planets orbiting the Sun still. He … Continue reading »
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Tycho Brahe: Historical Astronomers in Context
sweet mustache! the 411 on Tycho Brahe: Brahe proposed a theory different than the one we support today (where the Moon orbits the Earth which orbits the Sun with the other planets) ; Brahe supported a geo-heliocentric solar system with the Moon and the Sun orbiting Earth and the remaining planets orbiting the Sun still. He … Continue reading » Continue reading
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Tagged astro201, brahe, HW6
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Galileo Galilei in Context
Galileo Galilei (February 15, 1564 – January 8, 1642) was the first astronomer to observe celestial objects with telescope and publish his observations and sketches. He discovered the moon’s surface was not perfectly smooth, the sun experi… Continue reading
Historical Astronomers in Context
Image Source Isaac Newton was very prominent and highly respected for his work in physics and mathematics. He was born the 4th of January 1643 and died the 31st of March 1727, and is important to Astronomy for several reasons: of those reasons, arguably the most relevant is his contributions to the science through his […]
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Tagged astro201, Astronomy Thoughts, czar of russia, great fire of london, HW6, Newton, thoughts
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Kepler and the elliptical orbits
Johannes Kepler produced remarkably accurate results from the movement of the planets. After concluding that the planets move in elliptical orbits and that the planets sweep out equal area in equal time, he calculated the distance of the planets from … Continue reading → Continue reading
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