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

A coronal hole high speed stream, or CH HSS, was spotted on the sun on Friday, NOAA’s Space Weather Prediction Center ...

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

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 ...

A colossal coronal hole, nearly 500,000 miles (800,000 kilometers) wide, has opened in the sun's atmosphere, spewing fast-moving solar wind toward Earth. Coronal holes are regions where the sun's ...

After a coronal hole high speed stream, or CH HSS, was spotted on the sun on Friday, NOAA’s Space Weather Prediction Center ...

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 ...

Geomagnetic storms on March 25-26 could bring northern lights to the Midwest and northern regions of the US, NOAA reports.

The Met Office says the aurora is due to a 'high speed stream' (HSS) emitted from a coronal hole – an opening in the sun's outer surface. Although it's not an exact science, generally the ...

UPDATE: The Northern Lights could be visible in the U.S. tonight (March 26), appearing as far south as New York and Idaho due to a "coronal hole" sending streams of charged particles toward Earth.