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Author Question: While more massive than most of its neighbors, our Sun is still technically a low-mass star. ... (Read 37 times)

vicky

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on: Jul 27, 2018
While more massive than most of its neighbors, our Sun is still technically a low-mass star.
 
  Indicate whether the statement is true or false

Question 2

How have astronomers measured the acceleration of the universe?
 
  A) by measuring changes in galaxies' redshifts from year to year
  B) by comparing lookback times for white-dwarf supernovae (by measuring their apparent brightness) with the average distance between galaxies (based on their cosmological redshifts)
  C) They have not. It is a purely hypothetical idea.


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lorealeza77

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

TRUE

Answer to Question 2

B


vicky

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Reply 2 on: Jul 27, 2018
Excellent

xiaomengxian

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Reply 3 on: Yesterday
Gracias!

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