Why can tidal forces tear objects apart near a massive body?
Quick Answer
Tidal forces pull more strongly on the near side of an object than on the far side, stretching it. If the difference is strong enough, the object can break apart.
The Full Story
Tidal force is the difference in gravity across a body, not just gravity itself. Near a planet, moon, or black hole, the side closer to the massive object feels a stronger pull than the far side. This creates stretching along one direction and compression in another, which is why scientists speak of “spaghettification” near black holes. Tidal disruption is also what can break up comets, moons, and satellites that pass too close to a massive planet.
Key Facts
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"Why does gravity stretch things like taffy near a black hole?"
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