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Assuming a Radial Speed of a Galaxy to Be 100

Question 25

Multiple Choice

Assuming a radial speed of a galaxy to be 100 km/s from us and Hubble's constant to be 23 km/s/10⁶ c · y, how far is the galaxy from us?

A) 2300 ly
B) 2300 Mly
C) 4.3 Mly
D) 0.23 Mly
E) None of these is correct.

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