That is, stars rotated with constant velocity, even well beyond the region containing luminous matter.
Rotate as in spin on their own axis, or rotate as in revolve around the center of the galaxy? Wouldn't the latter be better called orbital velocity?
Do planets around the sun have the same rotational velocity? I know their orbits for N days cuts the same area of a pie slice around the sun, and the orbits would be dependent on the velocity of the planets.
I'm not aware of any similar relationship between the length of their days and the mass, speed or velocity of the planet itself.
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Brian
