pt.2 cp.1 PHILOSOPHERS WHO DESCRIBED THE ORIGIN OF THE EARTH

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    Gain Pimentel

    Cards (21)

    • Aristotle - postulated the concept of aether.
    • According to Aristotle, all bright lights are made up of aether.
    • Aristotle believed that the earth is the center of the solar system and the sun and the moon are rotating around the earth.
    • The Earth was, however, made of water, fire, air, etc.
    • Aristarchus measured the sizes of the sun and the moon and their distance from the Earth in terms of the Earth's radius.
    • Aristarchus derived that the Sun was actually six to seven times larger than the Earth.
    • Aristarchus said that the Earth rotates around the Sun.
    • Claudius Ptolemy supported the idea of Aristotle on geocentric world.
    • Ptolemy mathematically reproduced the part were made of aether and they moved in a perfectly circular orbit around the Earth which was made of air, fire, water, earth.
    • Copernicus proposed that the Sun was the center of motion of the planets and the Earth was the center of motion of the Moon.
    • Giordano Bruno - An Italian thinker who only supported the Copernican concept of heliocentric world.
    • Tycho Brahe - is a Danish astronomer who proposed a scenario which was sort of a compromise between Aristotle's world and Copernicus' world.
    • Tycho Brahe stated that all the planets---Mercury, Venus, Mars, Jupiter and Saturn---move around the Sun forming one system and the Moon and the Sun along with this system move around the Earth.
    • Tycho Brahe discovered a comet and realized that not all heavenly bodies moved in perfectly circular orbits.
    • Johannes Kepler is a German mathematician who used the observational records of Tycho Brahe and the Italian physicist Galileo Galilei.
    • In order to acquire Tycho observational records, Johannes Kepler joined Tycho as his assistant.
    • Galileo Galilei invented a telescope that made any object larger by 20 times.
    • Galileo Galilei immediately realized that the Moon was like the Earth and not made by aether as thought by Aristotle.
    • Christian Huygens - discovered a moon of Saturn called Titan in 1655
    • Christian Huygens reported the presence of the ring around the Saturn
    • Jean-Dominique Cassini - an astronomer at the Observatory of Paris, who discovered four more moons orbiting around the Saturn.
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