Applications to Astronomy: It can be shown that the approximate age of the universe is 1/H, where H is the Hubble constant. Taking H = 20 , estimate the age of the universe, in years. (1 ly = 9.46 × 1015 m)

A. 15 thousand years
B. 15 million years
C. 15 billion years
D. 50 billion years


Answer: C

Physics & Space Science

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