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Geography, 27.09.2019 16:30 19jcormier

How large is the observable universe?

a. the observable universe has a radius of about 14 billion ly.

b. the observable universe has a radius of about 1 ly.

c. the observable universe has a diameter of about 100,000 ly.

d. the observable universe has a diameter of about 1 au

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How large is the observable universe?

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