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Arches National Park Geology Tour provides an extensive, visually rich description of the geology of Arches, by Deborah Ragland, Ph.D. See our DVD collection.

Order it Up

Does any planet have a stronger magnetic field than Mars? Which planets have a greater mass than Jupiter? Which are denser? Which are larger? Find out while playing the Solar System Edition of Order It Up!

Measures of size and scale help us understand the magnitude of objects. Play with scales while trying to arrange planets by magnitude of mass, size, temperature, density, distance, gravity or magnetic field. Correctly order the planets and you unscramble a mystery picture!

Play Order it Up: Solar System Edition

We have a lot of fun making these games, and we hope that you have fun playing them, but we can't know unless you tell us! Please fill out our survey and let us know what you think--perhaps you have suggestions for future games?

Shop Windows to the Universe Science Store!

Learn about Earth and space science, and have fun while doing it! The games section of our online store includes a climate change card game and the Traveling Nitrogen game!

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Our atmosphere changes all the time. Winds and air pressure change over days, weeks, and years. These changes affect our weather. Now scientists say that they also affect how the Earth spins around and...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