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Learn about planets outside our solar system through Exoplanets and Alien Solar Systems by Tahir Yaqoob, Ph.D., a book in our online store book collection.

Movie courtesy of NSF.

Modeling Sunspots

Supercomputer models are helping solar scientists develop a better understanding of sunspots. Sunspots are the visible manifestations of powerful magnetic fields. Magnetically active regions on the Sun around sunspots are the source of solar storms - solar flares and coronal mass ejections. These enormous explosions hurl radiation outward through the Solar System. When these events strike Earth, they can endanger astronauts, disrupt radio communications, and even damage our electrical power systems. They also produce fantastic celestial light shows - the Southern and Northern Lights.

Right-click (Windows) or Option-click (Mac) here to download a copy of this video in QuickTime format.

Last modified January 15, 2010 by Randy Russell.

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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.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF