SpaceA weird star just rapidly dimmed for a few days and we don't know why A star that’s been totally calm for at least five years just suddenly dimmed by 70 per cent over two days, and it doesn’t quite fit any of our explanations News
SpaceWe don’t need stars to navigate space - black holes work way betterIf you want to find your way across the universe, forget using stars or GPS. The light from quasars billions of light years away can guide us and even help here on EarthFeatures