Lab 14 .pdf - Journeys in Astronomy Lab 14: Dark Matter and...

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Journeys in AstronomyLab 14:Dark Matter and Dark EnergyExercise A: Detecting Dark Matter1. In our solar system, a planet near the Sun (center) movesFASTERSLOWERthan a planet in the outer part of the solar system. A personcloser to the center on a Merry-Go-Round movesSLOWERFASTERthan a person on the outer part of the Merry-Go-Round. The rotation curveand angular momentum of the solar system suggest that the mass is primarilyat 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 thedifference 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 themotion of the galactic arms.What is the theorized cause of the velocity-verses-distance differences between the

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Term
Spring
Professor
Dixie Androes

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