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Author Question: In the critical density universe now proposed, the ratio of dark energy to matter is about A) 1 ... (Read 127 times)

vinney12

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on: Jul 27, 2018
In the critical density universe now proposed, the ratio of dark energy to matter is about
 
  A) 1 to 5. B) 1 to 1. C) 10 to 1. D) 3 to 1. E) 1 to 100.

Question 2

Why can the Hubble Space Telescope give us better direct measurements of star diameters than larger Earth-based telescopes can?
 
  What will be an ideal response?


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heinisk01

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

D

Answer to Question 2

Without the atmosphere and twinkling caused by turbulence, HST gives much better resolution and thus can directly image the disks of some of the giant stars, such as Betelgeuse.


vinney12

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Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


heinisk01

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Reply #3 on: Jul 27, 2018
Great! Please up vote :D


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