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The Geophysical Light/Dark Cycle
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This is an activity (located on page 131 of the PDF) related to sleep and circadian rhythms as well as space travel.
Transit Tracks
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In this space science activity, learners explore transits and the conditions when a transit may be seen.
Why Does the Moon Have Phases?
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In this activity, learners use a simple 3D model to discover why the Moon has phases.
Eclipse: How can the little Moon hide the giant Sun?
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In this activity, learners explore how distance can affect the way we perceive the size of an object.