this post was submitted on 22 Aug 2026
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Physicist Kip Thorne consulted on the movie. The physics are accurate.
Miller’s planet (the ocean world) was spinning extremely rapidly and it was located just above the event horizon of the supermassive black hole, Gargantua. The rapid spin of the planet provides a slingshot effect when you take off in the direction of the spin. This is true on earth as well, and is most pronounced near the equator, but the extreme spin of Miller’s planet makes it much easier to achieve orbit.
The proximity of the black hole is the cause of the extreme tidal forces which create the tidal waves on the planet, but would also help them take off for the same reason (tidal forces affect all masses moving in the gravitational field).
The lack of spaghettification is a known and established fact with supermassive black holes. What you were expecting is what happens with stellar black holes (10x mass of the sun to 100x), not with supermassive black holes (millions to billions of times the mass of the sun) whose event horizons are much larger and therefore have less extreme gravitational gradients (the source of spaghettification).
For me it was the part about how at the center of a supermassive black hole is a hypercube that let's you see and manipulate all time and space...
Then the spin should have reduced gravitational effect, created a “lean” toward the equator of the spin, created a bulge at the equator where the water would be slung outward due to the spin…
There’s all kinds of problems with this planet assuming a slingshot effect to help reach escape velocity based on the fuel requirement differential in this hypothetical.