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A planet's mass determines how much you weigh. To lose weight, all you need to do is visit a small planet! Check out Your Weight on Other Worlds!

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  • Sunday's
    Astro Fact:
    Did you know that for most of Earth's history, the continents on the Earth looked completely unrecognizable? More...
    The Astronomy Workshop has averaged about 20,000 page views per year and has now outlived its counter!  

    Materials for Students and Instructors.

    Created by Dr. Douglas P. Hamilton and students at U. Maryland. We gratefully acknowledge support from NSF (1998-2003) and NASA (2003-2010). About Us