What was the immediate result of Hubble measuring Andromeda to be millions of light-years away?

Answer

The known cosmos scale instantly multiplied by an incomprehensible factor.

When his measurements placed Andromeda far outside the accepted boundaries of the Milky Way, the immediate implication was staggering: our galaxy was one of many, instantly multiplying the scale of the known cosmos.

What was the immediate result of Hubble measuring Andromeda to be millions of light-years away?
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