A huge sun eruption combines with speedy solar wind from a "coronal hole" for a weekend aurora show, experts predict.

Auroras are possible over the U.S. tonight (March 25) as a "moderate" geomagnetic storm hits Earth. UPDATE: The Northern ...

This activity is connected to a fast-moving coronal mass ejection, or CME, that left the Sun on Friday. According to SWPC’s ...

Your browser does not support the video element. A giant, black region of the sun — called a coronal hole — was spotted on Monday by NASA's Solar Dynamics ...

NASA's Solar Dynamics Observatory just spotted a massive hole on the sun called a coronal hole. The hole appears black because it's cooler than its surroundings and is responsible for high-speed ...

NOAA Coronal holes form in the outermost layer of the sun when the local magnetic field opens up, allowing the solar wind to escape at a much faster rate than usual. Because of this escaping ...

Bright auroras could be visible tonight (Tuesday) in the Northern U.S. as Earth passes through a corridor of charged particles leaking out of a "coronal hole" in the sun’s atmosphere.

When you buy through links on our articles, Future and its syndication partners may earn a commission. The northern lights over Krasnoyarsk, Russia on Jan. 1. Two sun events have combined that ...