Model of the solar system

By maikouzhao
  • 100

    Claudius Ptolemy

    The earliest, and perhaps most important of Ptolemy's work that has survived is the Almagest, a treatise in 13 books. It gives in detail the mathematical theory of the motions of the Sun, Moon, and planets. Ptolemy made his most original contribution by presenting details for the motions of each of the planets.
  • 1473

    Nicolaus Copernicus

    Copernicus finished the first manuscript of his book, "De Revolutionibus Orbium Coelestium" ("On the Revolutions of the Heavenly Spheres") in 1532. In it, Copernicus established that the planets orbited the sun rather than the Earth. He laid out his model of the solar system and the path of the planets.
  • 1564

    Galileo Galilei

    Using the telescope, Galileo discovered the mountains on the moon, the spots on the sun, and four moons of Jupiter. His discoveries provided the evidence to support the theory that the earth and other planets revolved around the sun.
  • 1571

    Johannes Kepler

    Though Kepler is best known for defining laws regarding planetary motion, he made several other notable contributions to science. He was the first to determine that refraction drives vision in the eye, and that using two eyes enables depth perception.

  • Edmond Halley

    Edmond (or Edmund) Halley was an English scientist who is best known for predicting the orbit of the comet that was later named after him. Though he is remembered foremost as an astronomer, he also made significant discoveries in the fields of geophysics, mathematics, meteorology and physics.

  • William Herschel

    Sir William Herschel was a German-born British astronomer and composer, who is widely credited as the founder of sidereal astronomy for observing the heavenly bodies. He found the planet Uranus and its two moons, and formulated a theory of stellar evolution.

  • Discovery of the first four asteroids

    Vesta, minor-planet designation 4 Vesta, is one of the largest objects in the asteroid belt, with a mean diameter of 525 kilometres (326 mi). It was discovered by the German astronomer Heinrich Wilhelm Olbers on 29 March 1807 and is named after Vesta, the virgin goddess of home and hearth from Roman mythology.

  • Urbain Le Verrier

    Le Verrier was an astronomer who discovered the planet Neptune by using math! Urbain Jean Joseph Le Verrier was born in 1811 at Saint-Lô, France. He was a teacher of astronomy at the Ecole Polytechnic Paris. Le Verrier studied the planets Mercury and Uranus.

  • Clyde Tombaugh

    Clyde Tombaugh discovered the dwarf planet Pluto in 1930. He also discovered a number of asteroids and minor planets, and he was one of the supporters of further research to better understand UFOs or unidentified flying objects.

  • Voyagers 1 and 2

    Voyager 1 is a space probe launched by NASA on September 5, 1977. Part of the Voyager program to study the outer Solar System, Voyager 1 launched 16 days after its twin, Voyager 2.