Sunspot Flings Out 17 Solar Flares Meaning Big Auroras May Be Coming Our Way

High sunspot activity is celebrated by members of the amateur radio community as a harbinger of excellent ionospheric propagation conditions that greatly increase radio range in the HF bands.

Mar 10, 2025 · This video, captured by NASA’s Solar Dynamics Observatory between July 5 to 11, 2017, shows a sunspot moving across the Sun. Like freckles on the face of the Sun, sunspots …

Times of maximum sunspot activity are associated with a very slight increase in the energy output from the sun. Ultraviolet radiation increases dramatically during high sunspot activity, which …

Dec 3, 2025 · Sunspot, vortex of gas on the surface of the Sun associated with strong local magnetic activity. Spots look dark only by contrast with the surrounding photosphere, which is …

Apr 13, 2023 · According to the University Corporation for Atmospheric Research (UCAR), if you could cut out a standard sunspot from the sun and place it in the night sky, it would appear as …

If you could cut an average sunspot out of the Sun and place it elsewhere in the night sky, it would be about as bright as the full Moon. Sunspots have a lighter, outer section called the …

On this page you'll find an overview of all the visible sunspot regions on the Sun together with their properties, images and the chances on solar flares or proton events.

Sunspots appear in a wide variety of shapes and forms. The darkest area of a sunspot (also the first to be observed) is called the umbrae. As the sunspot matures (becomes more intense), a …

Feb 24, 2025 · A sunspot might only last days on the surface of the Sun, or may be visible for weeks or even months before disappearing. They also appear to move across the face of the …

As the first spots of a new cycle appear, they are at the higher latitudes of the Sun, and increase in size and activity until solar maximum —the peak of sunspot activity—is registered.