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Author Question: If the density is less than critical, which fate of the universe awaits us? What will be an ideal ... (Read 23 times)

justinmsk

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on: Jul 27, 2018
If the density is less than critical, which fate of the universe awaits us?
 
  What will be an ideal response?

Question 2

The star Arcturus shows a large proper motion, almost perpendicular to the galactic plane. What Population might we assume it belongs to, and why?
 
  What will be an ideal response?


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Eazy416

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

Gravity cannot slow the expansion enough, and the universe will be open and expand forever.

Answer to Question 2

It might be an older Population II star, because of its comet-like motion cutting across the galactic disk.


justinmsk

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Reply #2 on: Jul 27, 2018
TY


Eazy416

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Reply #3 on: Jul 27, 2018
You're welcome


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