An M3-class solar flare that lasted about 3 hours created a massive coronal mass ejection. The Solar Dynamics Observatory (SDO) and the Solar and Heliospheric Observatory (SOHO) captured the fireworks ...

A erupted with M1 and M6 class solar flares. Watch the fireworks in these views from NASA's Solar Dynamics Observatory.

A solar flare is a burst of radiation on the sun, according to NASA. They are the most powerful explosions in the solar system, with the biggest ones having as much energy as a billion hydrogen bombs.

The U.S. faces threats from EMPs, cyberattacks and AI, with experts warning of unpreparedness for infrastructure disruptions ...

The NSO describes sunspots as "areas of intense magnetic activity" that can trigger solar flares and coronal mass ejections — phenomena that can have damaging effects on Earth's radio communications ...

Previous experience shows that a solar flare - a burst of radiation from the ... that the blackout could have been triggered by ‘EMP weapons’ – nuclear arsenal which, when tested in space ...

These blemishes mark areas of intense magnetic activity, where solar flares and coronal mass ejections, or CMEs, are likely to occur. Coronal mass ejections are large clouds of ionized gas called ...

Recently, researchers have been investigating other, more subtle factors – from lunar cycles and weather to a surprising new possibility: the influence of solar heat. Geo explainer: What is the solar ...

Astronomers have found new evidence that a mysterious ninth planet may be hiding at the edge of the solar system - rewriting what we know about the cosmos again. An international team from Taiwan ...

The Earth's atmosphere is far more reactive to solar activity than scientists previously believed, with the new research showing it can pulse in near-synchronicity with the sun's powerful flares.