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Did You Know....

That every atom is 99.9999999% empty space. This means that if you were to remove all the empty space from all the atoms that make up the human race the mass that that is left over would fit into a volume the size of a sugar cube. That sugar cube would weigh as much as the combined weight of every human on earth.
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Our grade 10 Physics teacher told us Earth would be the size of a softball considering the "empty space" idea. I love mind-stretchers like this.