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 Universe *is* expanding faster than the speed of light. The reason why is one of the fundamental questions that remain unanswered in physics today. Scientists have suggested the presence of dark matter to explain this phenomenon, however nothing has been proven yet.
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