The aurora australis lit up Victoria’s night sky Wednesday night in a rare burst of green and purple, with the spectacle stretching unusually far across Australia. A severe geomagnetic storm pushed the southern lights well north of their normal range, and there’s one final chance to see them again tonight. Forecasters expect the best viewing around sunset before activity begins to fade. Skywatchers are urged to find dark, open areas with a clear horizon for the best chance of catching the displa