Solar flares, the sudden bursts of radiation that erupt from the Sun’s atmosphere, have become a topic of intense scrutiny ...

Sunspot activity increases on November 1, 2025, as new regions emerge on the Sun. Solar flares, coronal mass ejections, and geomagnetic conditions are monitored by NASA/SDO and EarthSky.

Sunspot AR4618 erupted with an M4.4-class solar flare causing a coronal mass ejection (CME) that may give Earth a glancing ...

Sunspot AR3229 erupted with an X2-class solar flare. NASA's Solar Dynamics Observatory captured the fireworks in multiple ...

Scientists have found a way to spot active regions of the sun, below the solar surface, a full day or two before they erupt as sunspots on our nearest star, researchers said. Sunspots, which are ...

NOAA's CCOR-1 coronagraph captured the blast that showed the sun's raw power in action.

New ESA simulations suggest that a solar storm on par with the 1859 Carrington Event could wreak havoc on Earth-orbiting ...

Back in 2019, a consortium of scientists predicted August 2025 as the peak of the solar activity cycle. But where are we now? The sun is powered by the nuclear fusion of hydrogen to helium, deep ...

The culprit is once again the magnetic field of the Sun. Instead of field lines extending out from the Sun and then back into ...

Such eruptions from the Sun can disrupt satellite operations, radio communications, and power grids on Earth if directed toward the planet.

In the heart of the Sacremento mountains sits the Sunspot Solar Observatory. This historic... In the heart of the Sacremento mountains sits the Sunspot Solar Observatory. This historic landmark is ...

Richard Switzer of Hamburg got this shot of the sun, complete with sunspots, during Thursday's solar eclipse as he stood on the Lake Erie shore by Route 5 and Hoak's Restaurant. Switzer said the ...