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In this activity, learners explore the relative size of the Sun and Earth as well as the distance between them.

In this activity, learners explore the relative sizes and distances of objects in the solar system.

"Exploring the Solar System: Craters" is an active, hands-on activity that demonstrates how craters form, and what they can teach us about the history and composition of planets and moons.

In this activity, learners use binoculars (or a telescope) to identify and track sunspots. If using binoculars, learners need a pair that can be secured on a tripod.