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Space telescopes can offer us better, clearer views of the universe (and of our own planet) than Earth-based telescopes can, but getting these large, delicate pieces of equipment into orbit is tricky.

In this optics activity, learners make a simple telescope using two lenses and a cardboard tube. Learners construct the telescope and then calculate its magnification.

In this activity, learners will use Google Sky to observe features of the night sky and share their observations.

In this activity, learners build a paper model of the spacecraft and photometer (telescope) used during NASA's Kepler Mission.

Learners listen to and try to decipher a radio message that was sent from Earth to possible intelligent civilizations.

Use this model to demonstrate the goal of NASA's Kepler Mission: to find extrasolar planets through the transit method.