What

All About the Sun

The light of daytime comes from our closest star: the Sun. Learn more about it!

What Causes the Seasons?

The answer may surprise you.

How Is the Sun Completely Blocked in an Eclipse?

It all has to do with the distance between Earth and the sun and Earth and the moon.

How Does Our Sun Compare With Other Stars?

The Sun is actually a pretty average star!

What Is Space Weather?

This type of weather comes from activity on the Sun’s surface.

Why Does the Sun Burn Us?

Sunburns are no fun.

What Is the Solar Cycle?

The Sun’s activity follows an 11-year cycle. Learn more about it!

What Is the Sun's Corona?

Why is the sun's atmosphere so much hotter than its surface?

What Is an Aurora?

What causes this beautiful light show?

Play Helios: A Game About How the Sun Makes Energy!

Where does the Sun's energy come from? Play Helios to find out!

What Is a Supernova?

Learn more about these exploding stars!

Make Sun Paper

Have some fun with the sun!