Coronal holes are temporary features of our star’s surface that can have far-reaching consequences.

G1 geomagnetic storm September 2026: Two large coronal holes in Earth-facing positions are sending back-to-back solar wind streams toward Earth, with isolated G1 (minor) storm intervals and aurora ...

Fast solar winds originating from the sun can have direct impacts on Earth—disrupting systems like GPS, aviation, electrical grids, and satellite and radio communications. A new paper by New Mexico ...

Add Yahoo as a preferred source to see more of our stories on Google. A coronal hole more than 35 times wider than the Earth has appeared on the surface of the sun, and it could spark aurora in Alaska ...

The sun's magnetic fields are a twisty, curvy, ever-changing mess. In particular, our star's polar regions host areas called ...

America’s first dedicated space weather satellite, tracked a coronal hole stream in real time on September 25, giving power ...

A butterfly-shaped coronal hole on the Sun is sending fast solar wind expected to reach Earth by September 14. It can potentially cause G1-G2 geomagnetic storms and auroras at high latitudes during ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Wisconsin's night sky glowing with Northern Lights as a ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London. Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and ...

The photo, taken by SDO's Atmospheric Imaging Assembly, shows glowing eyes, a bright nose, and one wide, dark "mouth"—a coronal hole where magnetic fields open and allow solar wind to stream freely ...

The Northern Lights may be visible on camera — and possibly to the naked eye — across 12 northern U.S. states and Canada as soon as it gets dark on Monday, Oct. 27, according to a forecast from the ...