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In this activity, learners confront their perceptions of gravity in the solar system.

In this activity, learners model the gravitational fields of planets on a flexible surface.

In this demonstration, learners compare the relative sizes and masses of scale models of the planets as represented by fruits and other foods.

In this activity, learners experiment and observe how the color of materials that cover the Earth affects the amounts of sunlight our planet absorbs.

In this activity described on pages 2-3 of the PDF, participants debate whether there there's life elsewhere in the universe.

This fun and simple hands-on astronomy activity lets learners explore model planets (that they or an educator will create), using methods NASA scientists use to explore our Solar System.

In this activity, learners will first learn the basics of galaxy classification and grouping.

In this activity (on pages 11-12 of PDF) learners create models of lava layers that have formed on the moon.

By tossing, collecting, and sorting beanbags, learners understand how the IBEX spacecraft uses its sensors to detect and map the locations of particle types in the interstellar boundary.

In this activity, learners build a simple pinhole viewer. They use this apparatus to project images from a variety of light sources, including a candle, the Sun, and the Moon.

In this activity, learners work in teams to construct human lung models from small plastic beverage bottles and balloons.

In this activity, learners work in teams to investigate the composition of unseen materials using a variety of tools.

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