Waves of solar flares keep pouring out of the sun, sparking "rolling" radio blackouts across the world. Active sunspot regions on the sun's surface are responsible for the flares, which are classified ...

A powerful solar flare erupted from the sun on November 14, 2025, causing radio blackouts across parts of Africa. This X4-class flare, the second-strongest of the year, originated from a highly active ...

The Sun emitted two strong solar flares, peaking at 4:48 a.m. and 2:36 p.m. ET on Saturday, June 1, 2024. NASA’s Solar Dynamics Observatory, which watches the Sun constantly, captured images of the ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A spot on the sun 10 times larger than Earth has been seen ...

The sun is not a static, tranquil sphere of gas, but an active, turbulent star with magnetic fields that twist and snap in powerful eruptions. Among the most striking and energetic of these eruptions ...

Considered our solar system's largest explosive events, solar flares can sometimes be as strong as a billion hydrogen bombs. Those with enough energy output to rank as an X-class have the potential to ...

Like the number of sunspots, the occurrence of solar flares follows the approximately 11-year solar cycle. But as the current Solar Cycle 25 approaches its peak, how are the number of solar flares ...