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Jan 1, 1543
Nicolaus Copernicus
Nicolaus Copernicus said that all the planets revolve around the sun not around the Earth. -
May 22, 1572
Tycho Brahe
Discovered that comets are similar to a dirty snowball. Consisting of large amounts of ice and dust. Often with a large tail of light. He also discovered Asteroids, which ar similar to miniature planets, and meteors. -
Kepler
Johannes Kepler discovered what keeps the planets orbit around the sun is their gravitational pull and inertia. -
Galileo and the Telescope
Creates the first telescope and uses it to find new discoveries in the universe. -
Thomas Wright
Suggested that the Milky Way is a disk of stars and planets like our own. -
William Hershel
discoveres Uranus -
Edward Hubble
Discovers that galaxies are groups of stars like the Milky Way. -
Hubble Telescope
Hubble telescope launched -
Exoplanet
first exoplanet found orbiting a giant star. -
Pluto
Pluto was defined a dwarf planet. Excluded from part of the main planets in our solar system.
