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Author Question: How do mass-to-light ratios for the inner regions of galaxies compare to the mass-to-light ratios we ... (Read 86 times)

BRWH

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on: Jul 27, 2018
How do mass-to-light ratios for the inner regions of galaxies compare to the mass-to-light ratios we find when we look farther from a galaxy's center? What does this tell us about dark matter in galaxies?
 
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Question 2

General relativity explains gravity as the ________ of spacetime.
 
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Bison

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Reply #1 on: Jul 27, 2018
Answer to Question 1

The farther we look from a galaxy's center, the higher mass-to-light ratios we find. In fact, this ratio grows as we go from single galaxies to clusters of galaxies. This tells us that mass is concentrated not at the centers of galaxies but in the halos of galaxies and the intergalactic medium.

Answer to Question 2

curvature


BRWH

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Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

FergA

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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