Tours and Questions

Learn about the Sun with the following tours and questions:

Why does the Sun Shine?
How to Build a Star






Shop Windows to the Universe Science Store!

Cool It! is the new card game from the Union of Concerned Scientists that teaches kids about the choices we have when it comes to climate change—and how policy and technology decisions made today will matter. Cool It! is available in our online store.

Windows to the Universe Community

News

Opportunities

You might also be interested in:

Pyrite "Dollar"

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

ExploraTour - How to Build a Star

Go outside tonight and look up at the star-filled night sky or feel the sun's rays on your face as dawn arrives. When you lift your face into the dawn you feel the sun's warmth, yet have you ever thought...more

IMF

IMF stands for Interplanetary Magnetic Field. It is another name for the Sun's magnetic field. The Sun's magnetic field is huge! It goes beyond any of the planets. The Sun's magnetic field got its name...more

Coronal Mass Ejections

"Without warning, the relatively calm solar atmosphere can be torn asunder by sudden outbursts of a scale unknown on Earth. Catastrophic events of incredible energy...stretch up to halfway across the visible...more

Solar Activity

The Sun is not a quiet place, but one that exhibits sudden releases of energy. One of the most frequently observed events are solar flares: sudden, localized, transient increases in brightness that occur...more

The Solar Atmosphere

The visible solar atmosphere consists of three regions: the photosphere, the chromosphere, and the solar corona. Most of the visible (white) light comes from the photosphere, this is the part of the Sun...more

The Solar Interior

To understand how our Sun works, it helps to imagine that the inside of the Sun is made up of different layers, one inside the other. The core, or the center of the Sun, is the region where the energy...more

High Altitude Observatory

Scientists at the High Altitude Observatory (HAO) try to understand the changes we see in the Sun over time. They also study how these changes affect the atmosphere of the Earth. There are four main areas...more

Shop Windows to the Universe

These rare charoite pendant and earrings are available in our online store, along with other jewelry, minerals, fossils, classroom materials, and household items.

Generous sponsorship of Windows to the Universe is provided by the Hewlett Foundation, the American Geological Institute, the American Geophysical Union, the National Science Foundation, NASA, NCAR, and the CISM and CMMAP projects. NASA CMMAP AGU CISM NCAR Hewlett AGI NSF