Question

If the universe is expanding, what is outside it? If there is nothing outside it, how does it expand to create void?

Answer 1

Answer:According to big bang theory when 2 stars clashed universe formed.

Explanation: but there is a paradox named fermi paradox which says that there's gotta be more life in universe than us because it's very large and the probabilities are also very high ... which also proves that there may be more advanced or less advanced civilizations in the universe . but most probably we will never know that is our universe the only thing present maybe outside there is something even larger than our imagination..

Answer 2

Explanation:

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