Discovery Of The Solar System

First two planets and last three planets were discovered

Jan 1, 1001

The fist two planets, Mercury, Venus, and the last three Mars, Jupiter and Saturn were discovered by babylonian astronomers.

Earth is considered a planet

Apr 29, 1543

1543) the Earth came to be considered a planet revolving with the other planets around the Sun, in the following order of distance from the Sun: Mercury, Venus, Earth, Mars, Jupiter, and Saturn.

Kepler

Jun 9, 1609

Johannes Kepler (1571-1630) who discovered and demonstrated that the Earth orbits the Sun.

Discovery of Uranus

Apr 26, 1781

William Herschel first discovered the planet Uranus

Discovery of Neptune

Sep 23, 1846

Galle and Le Verrier discovered Neptune

Discovery of Pluto

Jan 23, 1930

Clyde Tombaugh discovered Pluto