Scientists can usually spot coronal mass ejections before they affect Earth—but this one snuck past coronagraphs and ...

Extreme stellar flares have always captivated astronomers, but observing such phenomena on other stars had remained an elusive goal until now. Thanks to the European Space Agency's ...

A strong geomagnetic storm is forecast for Tuesday, according to the National Oceanic and Atmospheric Administration's Space ...

A coronal mass ejection from the Sun is expected to arrive by midday, potentially causing “strong” geomagnetic storms and ...

If you live in an area expected to experience the northern lights, bundle up tonight and head to a north-facing point with a ...

The Sun hurled a fast-moving cloud of charged particles toward Earth in early December, setting off a strong geomagnetic ...

Burst from M-dwarf star could be powerful enough to strip the atmosphere of any planets that orbit it, with implications for ...

A NASA spacecraft is making a close approach to the sun, repeating its record-breaking distance of 3.8 million miles from the ...

With solar wind conditions expected to intensify late Friday into Saturday, the Northern Lights may be visible in the U.S.

Auroras may be visible from Alaska to New York as an incoming coronal mass ejection is expected to slam into Earth today.

Researchers at the University of Hawaiʻi Institute for Astronomy (IfA) are helping reshape how scientists study the sun. The ...

In a year that's been full of spectacular northern lights, we've got at least one more big night to watch the amazing colors.