Star trails, looking straight up over about 2 hours the movement of the stars create an overhead circular pattern. The green bits in the sky are from some auroras that passed though the shot. - Antarctic Images by Anthony Powell Antarctica photos videos and timelapse
Shots of the southern stars and the Aurora Australis or Southern Lights, these are the southern hemisphere equivalent of the Aurora Borealis or Northern Lights.
Taken during the Antarctic winter in the general vicinity of McMurdo Station and Scott Base.