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Astronomical Society of the Pacific
Toilet Paper Solar System
Can we model how large the solar system really is? Attempt an astronomical feat with a hands-on-activity that uses a roll of toilet paper. Young scientists measure the distances of the planets from the sun to create a scale model of...
Center for Math and Science Education
Pocket Solar System
How in the world can something as big as the solar system possibly fit in your pocket? Complete this simple modeling activity and find out, as young scientists gain an appreciation for the incredible scale of outer space.