A ly (light year) is the distance that light travels in one year. The speed of light is 3.00 ˛ 108 m/s. How many miles are there in a ly? (1 mi = 1609 m, 1 yr = 365 d.)

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A ly (light year) is the distance that light travels in one year. The speed of light is 3.00 ˛ 10<sup>8</sup> m/s. How many miles are there in a ly? (1 mi = 1609 m, 1 yr = 365 d.)