Alien Hunters Intrigued by Shadows on Distant Star Is it a vast throng of comets, or a legion of megastructures constructed by aliens? Both are possible.
What Would Happen if the Sun Disappeared? Sometimes it's hard to appreciate a good thing till it's gone. But would the end of sunlight really mean the end of us?
Solar Storm Forecasts Prevent Tech Damage Geomagnetic storms caused by solar activity pose a huge risk to technology on and around Earth, but we’re getting better at predicting them thanks to new data.