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Depends on the black hole! For Sagittarius A* you’d need about 250 km/s in delta-v. If you’re targeting a supermassive black hole in another galaxy you’ll need at least 500 km/s to leave ours.


For comparison getting to LEO (low earth orbit) is ~10km/s, getting from LEO to moon is ~6km/s, from LEO to the sun is ~30km/s.




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