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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 build a 1:140 "scale model" of NASA's X-33 Reusable Launch Vehicle (RLV) Technology Demonstrator, and investigate how the model dimensions compare to the real vehicle.

In this space science activity, learners work together to create a human-powered orrery to model the movements of the four inner planets.

Using information from the My Place in Space lithograph, learners write and/or draw a postcard to friends and family as if they had gone beyond the interstellar boundary of our Solar System, into the

In this activity, learners explore how distance can affect the way we perceive the size of an object.