A certain galaxy is 2.7 x 10⁹ lightyears from the Earth. How fast is it receding from us?
(Use H₀ = 0.022 m/s · lightyear for Hubble's constant.)

Question

A certain galaxy is 2.7 x 10⁹ lightyears from the Earth. How fast is it receding from us? (Use H₀ = 0.022 m/s · lightyear for Hubble's constant.) A) 0.5 c B) 0.4 c C) 0.3 c D) 0.2 c

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The Answer of A certain galaxy is 2.7 x 10⁹ lightyears from the Earth. How fast is it receding from us? (Use H₀ = 0.022 m/s · lightyear for Hubble's constant.) A) 0.5 c B) 0.4 c C) 0.3 c D) 0.2 c

A Certain Galaxy Is 2