We are 13.7 billion light-years from the edge of the observable universe; that's a good estimate with well-defined error bars and with the available information, I predict that I will always be with you. (Katie Melua)

We are 13.7 billion light-years from the edge of the observable universe; that's a good estimate with well-defined error bars and with the available information, I predict that I will always be with you.

Katie Melua

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billion edge error good observable predict

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