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In this optics activity, learners make a lens and explore how the eye manipulates the light that enters it.

In this activity, learners will explore how light can refract or break apart into different colors.

In this activity, learners make a scale model of the Solar System and learn the real definition of "space." Learners use the online calculator to create an appropriate scale to use as a basis for thei

In this activity, learners cut out and fold their own collapsible origami starshade, an invention that shields a telescope's camera lens from the light of a distant star so that NASA scientists can ex