eli5-how do we know for sure how big space is? and how do we know we are right about everything we know in space?

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eli5-how do we know for sure how big space is? and how do we know we are right about everything we know in space?

In: Planetary Science

14 Answers

Anonymous 0 Comments

Imagine someone blind folds you and drops you off in a body of water. You’re floating in a small raft and there is nothing but water as far as you can see. That is us trying to observe space. We can measure the areas within sight, and a bit further with tech, but that’s about it. Space kind of has to be infinite, so there is no way to measure it anyway, as the size is infinite

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