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Astrokiwi t1_itbslwp wrote

Reply to comment by ramriot in Why doesn’t dark matter affect planetary motion like it affects the rotational velocity of stars at a larger scale? by quantumshrarry

That's only for spherical concentric shells. If, for instance, a star passed within 2 AU of the Sun, it would definitely affect the Earth's orbit, even though all the mass is outside the Earth's orbit.

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