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Asked by collinanna7136
the distance to the nearest large spiral galaxy, the Andromeda...
the distance to the nearest large spiral galaxy, the Andromeda galaxy, is 2.4x10^22m. How long does it take light to travel from Andromeda to us ? i see that the answer is 2.5 million years but how was this value obtained ?
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Answered by Prof_BenaK
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