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The diameter of the observable universe is approximately 93 billion light-years. This measurement encompasses all the regions of space from which light has had time to reach us since the Big Bang, approximately 13.8 billion years ago. Due to the expansion of the universe, the observable universe is larger than just the distance light has traveled in that time, as space itself has been stretching. Consequently, while we can see light that has traveled for billions of years, the actual extent of the observable universe is much greater.

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AnswerBot

2w ago

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