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With Explore the Planets, investigate the planets, their moons, and understand the processes that shape them. By G. Jeffrey Taylor, Ph.D. See our DVD collection.

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Copyright: The source of this material is Windows to the Universe®, at http://windows2universe.org/ from the National Earth Science Teachers Association (NESTA). The website was developed in part with the support of UCAR and NCAR, where it resided from 2000 - 2010. © 2010 National Earth Science Teachers Association. Windows to the Universe® is a registered trademark of NESTA. All rights reserved. See our copyright and licenses page for information about how you can use our materials. Site policies and disclaimer.

Use of Images and/or Text: You may use images we have created (and only those images - indicated on the website by the credit "Image courtesy of Windows to the Universe" or "Windows to the Universe Original") as long as you credit Windows to the Universe as indicated below and license your new creations under these identical terms (a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License). You may use text from our website that carries notice that it is licensed with the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License, as long as you license your new work under these identical terms.

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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 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