March 19
Posted in White History on Mar 19th, 2012
1932 The Sydney Harbour Bridge was officially opened for rail, vehicular and pedestrian traffic. 1915 Pluto was photographed for the first time at Lowell Observatory in Flagstaff, Arizona, by astronomers Percival Lowell and William Henry Pickering. However, at the time, they did not recognize it as a new planet. 1883 British chemist Sir Walter Norman [...]