Close to 100 scientists from all over Europe, the United States, and Japan are gathering this week at the Institute for Solar Physics (KIS) in Freiburg to present and discuss the first scientific results from the successful third flight of the balloon-borne solar observatory SUNRISE.

The Sun’s 11-year cycle still drives flares, aurorae, and geomagnetic storms, but the machinery under that familiar rhythm may be changing in a deeper way. After tracking sound waves inside the Sun for nearly four decades,

Solar cycle space weather models may be miscalibrated: a new helioseismology study found the Sun’s magnetic activity has retreated toward its surface since 1987 in ways sunspot counts never detected.

Internal changes due to the sun's "active biorhythm" have become increasingly "skin-deep" over the past four solar activity cycles, according to a new study.

The Sun looks like a warm yellow sphere with a surface covered with glowing messy hair. The yellow glow extends to the edges of the image, with some regions brighter than others. Many bright yellow arcs stick out from a wide band around the Sun’s equator.

On May 10, 2024, a John Deere dealer sent out a strange press release. “Please be advised that there is significant solar flare and space weather activity,” it read. The company, a maker of tractors and ball caps, isn’t the first entity you’d turn ...