This is really cool
See why all the planets orbit in the same direction, and how the Apollo space missions used gravity to go around the moon and return - on a piece of cloth!? AWESOME!!!
The main problem here is the increased friction experienced by the orbiting balls. The rigid fiberglass "donation funnel" type do still have friction, but lots less and are more like real orbital dynamics. I like the size and portability of this one, though... I guess this is as good as it gets.
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