What if the earth was turned physically inside out?
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Let's say some magic aliens come and prank us. They, in one step, remove out the innards of the earth, and put everything on the surface on the inside. They make some artificial gravity so we stay on the surface. They also put a giant light bulb in the middle that acts like the sun. Besides the artificial gravity, its physics as normal.
What would happen? Short term and long term.
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