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 ...

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 ...

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.

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 ...

An increase in auroral activity is likely the result of expected geomagnetic storm conditions caused by a coronal hole high-speed ... so you'll always know the biggest stories shaping the day ...

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 ...

The high-speed solar wind originating from this coronal hole, imaged here on Oct. 10, 2015, by NASA's Solar Dynamics Observatory, created a geomagnetic storm near Earth that resulted in several ...

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 ...