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Dig into Montana Before History: 11K Years of Hunter-Gatherers in the Rockies and Plains by D. H. MacDonald, Ph.D. See our online store book collection.

Flash Instructions

Some animations on this web site use Flash. To view those animations, you must have Flash installed on your computer and set up to work with your web browser.

  • Click here to go to the Flash page on Adobe's web site. You can download the version of Flash that will work on your computer from that page. Follow the directions provided by Adobe.
  • If the link above does not work for some reason, click here to go to Adobe's home page, then follow links to their Flash download page.

The animation below uses Flash. If you cannot see two planets orbiting the Sun in the animation below, you do not have Flash installed properly on your computer and will need to get it from Adobe's web site.

Last modified May 13, 2008 by Randy Russell.

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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