Great auk (Pen Gwyn in Welsh), or, because the great auk had such large white circles on its head. When European explorers discovered what today are known as penguins in the Southern Hemisphere, they noticed their similar appearance to the great auk and named them after this bird, although biologically, they are not closely related. Whalers also lumped the northern and southern birds together under the common name "woggins". Standing about tall and weighing approximately as adult birds, the flightless great auk was the second-largest member of both its family and the order Charadriiformes, surpassed only by the mancalline "Miomancalla". The great
Southern Hemisphere Auroral Radar Experiment every two minutes. The three stations' ranges overlap to cover most of the Antarctic continent. SHARE is part of the international Super Dual Auroral Radar Network (SuperDARN). It supplies valuable data to track space weather. Southern Hemisphere Auroral Radar Experiment The Southern Hemisphere Auroral Radar Experiment (SHARE), started 1988, is an Antarctic research project designed to observe velocities and irregularities of electrical fields in the ionosphere and magnetosphere. SHARE is operated jointly by the University of Natal, Potchefstroom University, the British Antarctic Survey and Johns Hopkins University and operates out of British Halley Station, South African SANAE IV Station and