1820 - A Russian expedition led by Fabian Gottlieb von Bellingshausen and Mikhail Petrovich Lazarev discovers the Antarctic continent approaching the Antarctic coast.
1821 - Alexander Island is first discovered by Fabian Gottlieb von Bellingshausen.
1878 1st telephone exchange (New Haven, CT)
1887 Work begins on the Eiffel Tower in Paris
1986 - Space Shuttle program, STS-51-L Mission: Space Shuttle Challenger breaks apart after liftoff killing all seven astronauts on board.
