I know that the universe is 13 billion years old and the fastest anything could be is the speed of light so if the universe is expanding as fast as it could be wouldn’t the universe be 13 billion light years big? But I’ve searched and it’s 93 billion light years big, so is the universe expanding faster than the speed of light?
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The expansion of space isn’t constant. Right now, expansion is speeding up. Notably, the Big Bang was a period of extremely rapid expansion, as the name would suggest. So we can’t really correlate age and size of the universe.
~~No, expansion is not faster than the speed of light right now. It *can* be though.~~ Expansion isn’t movement, so it can ignore the regular speed limit of the universe. Things are getting farther apart not because they’re all moving away from each other. They’re getting farther apart because the literal empty space between them is getting bigger.
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