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  1. Introduction


    from cxcpub Added 30 0 0

    This activity will help you explore the universe by shrinking cosmic scale in just 4 steps. Print out the instructions and cut-out templates (see printer-friendly PDFs at http://chandra.harvard.edu/resources/podcasts/graphics/2inchUcontent.pdf).…

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    • What You'll Need


      from cxcpub Added 47 0 0

      Wrap your mind around the vast distances in the universe. What you'll need: a measuring tape, 6 round images from the printable 2-inch universe PDF, a grain of salt and a wide open mind. What…

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      • Step 1: The Realm of the Earth and Moon


        from cxcpub Added 111 0 0

        If you shrink the earth to about 2 inches or 5 centimeters (cm) in diameter here's how other objects would compare in size and distance: Note: distances in this activity are approximate in order…

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        • Step 2: The Realm of Our Sun the Only Star in Our Solar System


          from cxcpub Added 55 0 0

          Now let's switch scales by shrinking the minivan-sized Sun down to a 2-inch diameter: * Earth Size - A grain of salt, with a dust-speck Moon 1/2 inch away from it * Sun-Earth Distance…

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          • Step 3: The Realm of Our Solar System and Nearby Stars


            from cxcpub Added 184 0 0

            Now let's shrink the entire Solar System down to 2 inches in diameter : Planet sizes and orbits on 2-inch image are NOT to scale! * Size of Sun - Microscopic at this scale, a shining speck…

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            • Step 4: The Realm of Galaxies


              from cxcpub Added 83 1 0

              Now let's switch scales one last time, and shrink the entire continent-sized galaxy down to 2 inches: * Size of Sun and Stars - Individual stars are invisible, smaller than atoms, at this…

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              • Going Further


                from cxcpub Added 172 0 0

                You can use this 4-STEP SCALE MODEL to imagine some of the distances involved in NASA's explorations of the universe. The Realm of the Earth and Moon: NASA's three Great Observatories view…

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                • Reflection Questions


                  from cxcpub Added 24 0 0

                  How likely do you think it is that there is life elsewhere in our galaxy? Intelligent life? What challenges are there in trying to communicate with any potential life around other stars? In other…

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