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100
Claudius Ptolemy
He believed that the Earth is in the middle and called it geocentric because of the Roman word Earth. -
1473
Nicolaus Copernicus
He was the first one to think that the sun is in the middle and not the earth he named it heliocentric. -
1564
Galileo Galilei
Galileo Galilei is famous for discovering the four biggest moons in Saturn and Saturns rings. He made the telescope more better. -
1571
Johannes Kepler
he was famous for the discovery of the planets moving around the Sun and orbits shaped like ellipses. -
Edmond Halley
Edmond Halley is an English astronomer, geophysicist, mathematician, meteorologist, and physicist. He was the second Astronomer Royal in Britain, succeeding John Flamsteed in 1720 -
William Herschel
Frederick William Herschel is a German, British astronomer he found the planet Uranus and its two moons. He was selling music and telescopes for 50 years. -
Discovery of the first four asteroids
The four asteroids were called ceres, pallas, vesta and hygiea. Asteroid come from a region of solar system that lies more than 2 ½ times as far from the Sun as Earth does. -
Urbain Le Verrier
Urbain Le Verrier was a French mathematician who specialized on celestial mechanics and he the was the founder of Neptune. -
Clyde William Tombaugh
Clyde William Tombaugh discorded pluto in 1930 he is an American astronomer. But in 2006 pluto became a daft planet because of the plante getting smaller -
Voyagers 1 and 2
Voyager 1 was launched by NASA on September 5, 1977. It studies the outer Solar System, Voyager 1 launched 16 days after its twin, Voyager 2 who did the same job.