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Become a nitrogen atom in the nitrogen cycle in our Traveling Nitrogen Classroom Activity Kit/Game. See all our games, activity kits and classroom activities.


This sequence shows the approximate 30 hour lifetime of a SAR arc, taken by Dynamics Explorer 1 in 1982.
Image provided courtesy of L. Frank and J. Craven from the Dynamics Explorer 1

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Cool It! Game

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

The SAR Arc

The aurora we are most familiar with is the polar aurora. This is what people are referring to when they speak of the northern or southern lights. But there are other less-known auroral activity, such...more

Bibliography Information

Thank you for visiting Windows to the Universe. Windows to the Universe has been in development since 1995. Over the years, there have been many writers of the pages on the site. Most pages have been worked...more

Please Support Windows to the Universe!

Donation, Sponsorship, Partnerships This image shows the lights on Earth as seen in darkness from a satellites orbiting our planet. Click on image for full size Image courtesy of NASA, DMSP, and NOAA NGDC....more

Regular Educator Memberships on Windows to the Universe

The Windows to the Universe team will be offering memberships for all educators by 1 September 2010 which will provide access to new website capabilities and services, as well as access to an ad-free version...more

Windows to the Universe Partnership Opportunities for Education and Outreach

Are you looking for an effective and efficient education and outreach program to supplement your research activities? Are you struggling to reach a significant audience of students, teachers, and the public?...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA