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3...2...1 Puff!
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  In this activity, learners build small indoor paper rockets, determine their flight stability, and launch them by blowing air through a drinking straw.
  
Black Holes: No Escape
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  This fun and simple hands-on astronomy activity lets learners experiment with marbles and weights to discover some basics about gravity and black holes.
  
Exploring Black Holes and Gravity
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  This fun and simple hands-on astronomy activity lets learners imagine what would happen if our Sun were replaced with a black hole.