21. How big is the known Universe? (A K2S Question)

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Get ready for this! The known or observable limit of what we can see within our Universe (due to the limiting factor of the speed of light) is about 13.7 billion light years! That number is so big that I can't even come up with a comparison to make it meaningful.

Answer provided by Jim Zebrowski


Image:K2S logosmall.jpg Question and Answer extracted from the book Kids to Space - by Lonnie Schorer


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