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This week we have a four-part series on gravity. What it is, how it works, and how we know it exists between all masses.

Monday

part1Why is juggling so hard? Hand-eye coordination, sure, but gravity is part of the problem, too. Prove Your World tries its hand at juggling and learns there’s more to gravity than falling down.

 

Tuesday

part2Because of gravity, everything pulls on everything else. But on earth, we just see things fall down. Prove Your World pulls out an old experiment to show gravity moves in all directions.

 

 

Wednesday

part3Are you sure everything pulls on everything else? Prove Your World tries another variation of the Cavendish experiment just to be certain. Plus Popper has his eye on Katy Perry.

 

 

Thursday

part4Popper is terrified the space station will crash into earth. Is he right to worry? How does gravity work in space?