So are you saying that the orbital period of a star twice as far away from the galactic center as the sun would also be roughly 200 million years?
Because Kepler's law that says the square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its...
So here's a question I'm struggling with:
The rotation speed of the sun around the Milky Way center is 220 km/s and it takes the sun around 200 million years to orbit once around center of the galaxy.
Given that the rotation curve is relatively flat (i.e. the rotation speed stays the same as...