Space Exploration By dz19513 Period: Jan 1, 1609 to Nov 20, 2014 Space Exploreation Nov 20, 1609 Gallileo Jan 1, 1610 jupiters moons discovered Jan 1, 1610 discovery of venus Jan 1, 1610 Galilao discovered saturns rings Jan 1, 1659 mars was discovered Jun 6, 1687 Publication of Principia Mar 17, 1781 discovery of uranus Jan 1, 1813 first exposition of rocket mecanics Sep 23, 1846 neptune discovered Jan 1, 1903 Exploration of Cosmic Space Jun 5, 1927 german rocket club founded Feb 18, 1930 Pluto, Discovered Oct 3, 1942 first sucessfull rocket launch V-2 Rocket Oct 4, 1957 sputnik launch Nov 3, 1957 first dog in space Jan 31, 1958 first american satalite launch Apr 12, 1961 first human in space Apr 24, 1990 the Hubble launch