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Author Question: Because the Hubble constant has a value of 70 km/s/Mpc, a galaxy with a recession velocity of 21,000 ... (Read 179 times)

go.lag

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on: Jul 27, 2018
Because the Hubble constant has a value of 70 km/s/Mpc, a galaxy with a recession velocity of 21,000 km/s must be _______________ Mpc from Earth. (Express your answer as a whole number of Mpc)
 
  Fill in the blank(s) with correct word

Question 2

The Chandra observatory uses ________________ mirrors in which the X-rays reflect at shallow angles from the polished inside of the mirrors to form images on X-ray detectors.
 
  Fill in the blank(s) with correct word


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flexer1n1

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

300

Answer to Question 2

cylindrical


go.lag

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Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

gcook

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Reply 3 on: Yesterday
:D TYSM

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