A massive hole some 62 times wider than the Earth has opened up in the Sun's atmosphere—and it could lead to aurora over the U.S. NASA captured a photograph of the roughly 497,000-mile-wide ...

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 ...

NASA’s Solar Dynamics Observatory (SDO) has detected a colossal coronal hole on the Sun’s surface, stretching an estimated 500,000 miles across—a size equivalent to 62 Earths lined up side ...

These dark areas on the Sun, as seen in satellite images, can produce space weather events known as coronal hole high-speed streams (CH HSS), which can trigger Northern Lights on Earth.

See photos in our latest coverage. Skies across the northernmost US states could be graced with stunning displays of the Northern Lights on Friday, blown into view by a giant "hole" on the sun.