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Geography, 21.01.2020 00:31 paolaviviana

What is a light year?

a. the distance light travels in 1 year

b. the distance light travels in 1 second

c. a measurement of time within the universe

d. a measurement of time within the solar system

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What is a light year?

a. the distance light travels in 1 year

b. the dist...

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