Galaxy Formation
I'm wondering if the reason that the outside of the galaxy rotates at the same speed as the inside isn't because the galaxy is a young galaxy. The reason it is believed that the inside should rotate faster than the outside is because the inner planets of a solar system orbit at a faster speed than the outer planets. They have to because if they didn't the greater gravity near the sun would cause them to fall closer to the sun. Would they fall into the sun or reach some asymptotic orbit? That's for another paper however it makes sense that the inside should rotate faster than the outside. Like I said if they do not they will fall toward the sun. Since we are now comparing the Milky Way and other galaxies with the solar system then lets ask ourselves if this is a fair analogy. It does seem fair because in fact there has been found a solar system that actually looks like a galaxy. This solar system is though...