Distances in space are often quoted in units of light years, the distance light travels in one

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Distances in space are often quoted in units of light years, the distance light travels in one year.

(a) How many meters is a light year? 

(b) How many meters is it to Andromeda, the nearest large galaxy, given that it is 2.00 × 106 light years away? 

(c) The most distant galaxy yet discovered is 12.0 × 109 light years away. How far is this in meters?

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