Name | Tycho Brahe | Nicolás Copérnico | William Herschel | Johannes Kepler | Edwin Hubble |
Date Of Birth | December 14, 1546 | February 19, 1473 | November, 15, 1738 | December 27, 1571 | November 20, 1889 |
Main thought | Tycho Brahe proposed a model in which the Earth was at the center of the Universe, but with the planets revolving around the Sun. | The celestial movements are uniform, eternal, and circular or composed of different cycles (epicycles). The center of the universe is near the Sun. ... The retrograde motion of the planets is explained by the motion of the Earth. | Herschel observed an unrecorded object that at first glance looked like a comet: studying it carefully, he was soon able to determine that it was actually a new planet, Uranus. | Kepler tried to understand the laws of planetary motion for most of his life. At first Kepler considered that the movement of the planets had to comply with the Pythagorean laws of harmony | Edwin Hubble's early work at the Mount Wilson Observatory focused on the study of what were then known as nebulae. ... It was clear that some nebulae were in the galaxy and that they were basically starlit gas within it. |
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