-
Galileo's discovers
4 jovian moons, moons craters, and the Milky Way Galaxy -
Keplers first two laws of planetary motion
Kepler explains how the planets move around the sun. -
Newton Telescope
He bulit the first reflecting Telescope -
Hertzsprung
he discovers giant and dwarf stars -
Sputnik (russian satellite)
First man-made satellite -
Yuri Gargarin- first man in space
Russians sent first cosmonaut in space. -
First man on moon
Neil Armstong walks on the moon (USA) -
Challenger Disaster
The challenger blew up right before take off. -
Galileo Spacecraft discovers orgin of Jupiters rings
discovers orgin of Jupiters rings. The dust was kicked off of small moons that surrounded Jupiter. -
First man made object to leave the solar system
Voyager spacecraft, launched in the 70's, leaves our solar system