The Flat Rotation Curves of Spiral Galaxies Tell Us That

question 40

Multiple Choice

The flat rotation curves of spiral galaxies tell us that they contain a lot of dark matter.Do they tell us anything about where the dark matter is located within the galaxy?

• A)Yes,they tell us that dark matter is concentrated near the center of the galaxy.
• B)Yes,they tell us that dark matter is spread uniformly throughout the galactic disk.
• C)Yes,they tell us that dark matter is spread throughout the galaxy,with most located at large distances from the galactic center.
• D)No,we cannot determine anything about the location of dark matter from the rotation curve.

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