Sunspots AR3664 and AR3663 have been erupting with X- and M-class solar flares. Both sunspots are Earth-facing and could ...

NASA's Solar Dynamics Observatory captured the moon transit the sun. Sunspot AR3311 was active with m-class flares. Credit: ...

NASA's Solar Dynamics Observatory spotted the X1.1-class solar flare that erupted from the sun at 11:13 p.m. EST on March 4 (0413 GMT March 5). This series of photographs of the 2012 Venus transit was ...

Images captured by NASA's Solar Dynamics Observatory have revealed that "coronal loops" give off subtle flashes of ultraviolet light before a solar flare, which could act as an early warning system ...

Massive solar flares, graceful eruptions of solar material, and an enormous sunspot make up some of the imagery captured by NASA's Solar Dynamics Observatory in 2013 and 2014. A year ago this weekend, ...

The sun has emitted a powerful solar flare that has the capability to interfere with technology on Earth. The explosive burst of radiation peaked on the evening of June 17, matching the intensity of ...

A massive hole some 62 times wider than the Earth has opened up in the Sun's atmosphere—and it could lead to aurora over the U.S. NASA captured a photograph of the roughly 497,000-mile-wide phenomenon ...

Big changes are about to occur on the Sun. Anything that happens on the Sun is big of course—especially to the pipsqueak planets that orbit it and, at least in the case of Earth, depend on it for life ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A giant black spot has appeared on the sun’s disk — and ...

A solar eclipse on April 27, 2025, as seen only by NASA Solar Dynamics Observatory. When is the next solar eclipse? Yesterday and today — but they were not reported in advance. Why? They were only in ...