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Author Question: Suppose we look at a photograph of many galaxies. Assuming that all galaxies formed at the same time ... (Read 58 times)

jilianpiloj

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on: Jul 27, 2018
Suppose we look at a photograph of many galaxies. Assuming that all galaxies formed at the same time after the Big Bang, which galaxy appears to us as the youngest?
 
  A) the galaxy that is furthest from us
  B) the galaxy that is closest to us
  C) the galaxy that appears bluest to us
  D) the galaxy that appears largest to us
  E) All galaxies would appear to have the same age.

Question 2

One light-hour is the distance that light travels in an hour. How far is this, in kilometers? (Recall that the speed of light is 300,000 km/s.)
 
  A) 1.08 billion km
  B) 18 million km
  C) 100 million km
  D) 300,000 km
  E) 9.46 trillion km


onowka

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

A

Answer to Question 2

A


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jilianpiloj

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


onowka

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


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