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
We don’t.
We can make educated guesses based on the data we have. Within the next few decades ( assuming no divine intervention and that we don’t have a nuclear war to wipe us all out ) science will continue to advance, technology will develop, and we will be able to discover more that will cause future scientists to laugh at what is accepted now.
Perhaps one day we WILL know how big the universe is.
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