One way to track the solar cycle is by counting the number of sunspots, which are dark, cooler patches on the Sun’s surface.

The sun’s outer atmosphere resembles a pufferfish.

At times, the sun ejects energetic material into space, which can have consequences for space-based and even ground-based ...

Scientists have pulled back the curtain on one of the most extreme solar regions seen in decades, tracking it almost nonstop ...

How big it is: 865,000 miles (1.392 million kilometers) across How far away it is: 93 million miles (150 million km) What type of star it is: A yellow dwarf star The sun is the star at the center of ...

From communications outages to a brush with nuclear war, solar events like flares and coronal mass ejections have shaped ...

A NASA mission to study the heliosphere—the sun's magnetic bubble that shields our solar system—and develop a better understanding of space weather was launched from the agency's Kennedy Space Center ...

Could the icy moons of our solar system hold life beyond our planet? Keith Cooper looks at how planetary scientists plan to find out ...