The strength of the April 2023 geomagnetic storm was a surprise in part because the coronal mass ejection (CME) that produced it followed a relatively weak solar flare, seen as the bright area to the ...

Sunspot AR4618 erupted with an M4.4-class solar flare causing a coronal mass ejection (CME) that may give Earth a glancing blow. NASA's Solar Dynamics Observatory captured the fireworks in multiple ...

Astronomers using the European Space Agency's XMM-Newton space observatory and the LOFAR telescope have definitively spotted an explosive burst of material thrown out into space by another star—a ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Wisconsin's night sky glowing with Northern Lights as a ...

Sunspot AR3500 blasted a M9.8-class solar flare. NASA's Solar Dynamics Observatory captured footage of the flare in multiple wavelengths. Views from the ESA/NASA Solar and Heliospheric Observatory ...

“It’s the first time we have detected one,” says Cyril Tasse of the Paris Observatory, referring to a coronal mass ejection, or CME, erupting from any star other than the Sun. Caught in unprecedented ...

An image sequence from the U.S. Naval Research Laboratory’s (NRL) Large Angle and Spectrometric Coronagraph Experiment (LASCO) C2 coronagraph observing a fast coronal mass ejection, as mentioned in ...