Two coronal mass ejections have combined into an enormous cloud of magnetized plasma that is forecast to hit Earth on Tuesday and potentially trigger a strong geomagnetic storm. When you purchase ...

Modern telescopes and satellites have helped us measure the blazing hot temperatures of the Sun from afar. Mostly, the temperatures follow a clear pattern: The Sun produces energy by fusing hydrogen ...

Auroras at peak: NOAA forecasts active geomagnetic conditions through May 10, creating prime northern lights viewing in high-latitude regions. Storm drivers: High-speed solar wind from a coronal hole ...

An artist’s impression of an eruption from a large red star and its effect on a small planet near it: the small blue object with a faint, wispy trail, indicating its atmosphere being blown off. (Olena ...

Scientists at the National Oceanic and Atmospheric Administration Space Weather Prediction Center observed a cluster of sunspots on the surface of the sun this week. With them came solar flares that ...