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600 quadrillion.

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I get 5.878 x 1017 miles. Is that the same order of magnitude ?

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Well 1 light year is 9.46*1012 km. So 100000 light is 9.46*1017 km. 1 mile is 1.6 km. Hence 9.46*1017 km is 5.9*1017 miles. So the second contributor is correct.
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11y ago

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