3 days ago · The webpage provides information about sunspots, their significance, and how they are monitored.

The sunspots appear relatively dark because the surrounding surface of the Sun (the photosphere) is about 10,000 degrees F (5,538 degrees C), while the umbra is about 6,300 degrees F (3482 degrees C).

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.

1 day ago · Curious about clouds? Well, you’re in the right place. We’re going to break down the basic types of clouds including cirrus, cumulus, stratus and cumulonimbus. Some you will see on a blue sky ...

Ready, Set, Action! Our Sun is the Star in Dazzling Simulation. A New Look at Sunspots is Helping NASA Scientists Understand Major Flares and Life Around…

Mar 25, 2025 · Sunspots are areas that appear dark on the surface of the Sun. They appear dark because they are cooler than other parts of the Sun’s surface. The temperature of a sunspot is still very hot though—around 6,500 degrees Fahrenheit! Why are sunspots relatively cool? It’s because they form at areas where magnetic fields are particularly strong.

4 days ago · Explore today's real-time solar data, including live sunspot images, solar spectrum updates, and nautical twilight times. Stay updated on current sky activity with accurate solar observations.

Solar measurements reveal that the average surface temperature of the sun is 6000° Celsius and that sunspots are about 1500° Celsius cooler than the area surrounding them (still very hot), …

The Sun, an active star fueled by nuclear fusion reactions, displays sunspots, solar flares, erupting prominences, and coronal mass ejections.

Mar 13, 2012 · The electric currents in the Sun, as well as in planets and galaxies, generate magnetic fields. Sunspots, temporary disturbances in the Sun's photosphere, are the most visible advertisement of the solar magnetic field.