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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Yes, but the “friction” of spacetime is in form of _gravitational waves_. It takes an extremely long time for it to slow down enough. Even with black holes, the most extreme example, it takes billions of years; for a planet around a sun, the universe is simply not old enough (yet).
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