Journeys in Astronomy Lab 14:Dark Matter and Dark Energy Exercise A: Detecting Dark Matter 1. In our solar system, a planet near the Sun (center) movesFASTER SLOWERthan a planet in the outer part of the solar system. A person closer to the center on a Merry-Go-Round movesSLOWERFASTER than a person on the outer part of the Merry-Go-Round. The rotation curve and angular momentum of the solar system suggest that the mass is primarily at theCENTER OF THE SOLAR SYSTEM. (See video in Weekly Module) Why would a position on a merry-go-round move at different velocity-verses- distance rates than a position in a solar system (i.e. what’s the cause of the difference between the two)?
2. Neither the velocities of planets in our solar system or the solid disk merry-go-round can be used to describe the motion of the galactic arms.What is the theorized cause of the velocity-verses-distance differences between the
