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by ashes-of-sol 772 days ago
Orbital velocity increases as you get closer to the middle, not the other way around.

An example closer to home, our orbital velocity around the Sun is 29.8km/s. Mercury is 47.9km/s (on average, it actually varies throughout its orbit). Neptune is 5.4km/s.

1 comments

This doesn't apply to stars in the Milky Way. Unlike planets around a star, stars in the Milky Way don't follow Keplerian physics in their orbit around the galactic center.

https://en.wikipedia.org/wiki/Galaxy_rotation_curve

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The rotational/orbital speeds of galaxies/stars do not follow the rules found in other orbital systems such as stars/planets and planets/moons that have most of their mass at the centre. Stars revolve around their galaxy's centre at equal or increasing speed over a large range of distances. In contrast, the orbital velocities of planets in planetary systems and moons orbiting planets decline with distance according to Kepler’s third law.

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