If it works exactly like a ball that is placed on top of a cloth, doesn’t the celestial bodies that is rotating around the ball will eventually get sucked into the center?
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The ball and fabric demonstration are good metaphors to help with visualisation. But it has a component that space doesn’t: friction. So when someone uses it for a demonstration the “orbiting” object always falls to the center because it is constantly being slowed by friction while its rolling. Moving through space alone doesn’t have friction.
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