If the Distance of a Galaxy at a Redshift Z

question 44

Multiple Choice

If the distance of a galaxy at a redshift z = 0.5 is 1,800 Mpc, how many years back into the past are we looking when we observe this galaxy?

• A) 500 million years
• B) 2 billion years
• C) 6 billion years
• D) 9 billion years
• E) 10 billion years

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