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The universe is 13.8 billion years old. Light is the fastest thing that exists. So the math says the farthest anything could be is 13.8 billion light-years away except the observable universe actually measures 93 billion light-years across, nearly seven times larger. This video explains why: cosmic expansion, Hubble's discovery, dark energy, and cosmic inflation, the theory suggesting the true universe extends at least 250 times beyond what we can ever observe possibly without limit. We break down the cosmic microwave background, the Hubble tension, James Webb's impossibly early galaxies, and why the total size of reality may be permanently unknowable, sealed off by the same laws of physics that let us exist in the first place.
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