2010 Event Experts believe three Russian satellites that failed to reach orbit after launching from Kazakhstan's Baikonur Cosmodrome have crashed into the Pacific Ocean 1988 Event ESA's Ariane-3 launches 2 communications satellites (1 Indian) 1981 Event Satellites China 10 and 11 launched into Earth orbit by B-1 rocket 1981 Event European Space Agency's Ariane carries 2 satellites into orbit 1980 Event Earth satellites record gamma rays from remnants of supernova N-49 1964 Event U.S.S.R. launch 3 Kosmos satellites 1963 Event 2 secret U.S. military satellites launched from Cape Canaveral 1945 Event Arthur C. Clark proposes relay satellites in geosynchronous orbit 1851 Event William Lassell discovers Ariel and Umbriel, satellites of Uranus 1829 Birthday Asaph Hall, discovered satellites of Mars, Phobos and Deimos 1799 Birthday William Lassell, discoverer, satellites of Uranus and Neptune 1610 Event Galileo discovers 1st 3 Jupiter satellites, Io, Europa and Ganymede
