Add Yahoo as a preferred source to see more of our stories on Google. A fun-loving mom told her son that a sneaky Elf on the Shelf had set up almost 100 rocket balloons for the tot to play with. Mom ...
What do balloons have to do with rockets? Find out in this episode of ISS Science with Astronaut Randy Bresnik. Click here for lesson plans: airandspace.si.edu/iss ...
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