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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> 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?
This deduction is based on a common misunderstanding of the Big Bang. The universe did not start from a single, finite point and expand some kind of border or edge outward in all directions. Instead the universe is likely infinite in extent now and from the start, it simply became more spread out and less dense over time.
The second aspect here is that the expansion of the universe is not limited by the speed of light because the light speed limit applies to things moving through space, not the appearance of more space between objects or locations.
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