The observable universe extends to approximately 46 billion light-years in radius (the comoving distance to the cosmic microwave background), but this is not the edge of the universe—the universe may extend far beyond what we can observe and could be infinite.
factualpending
Speaker
Brian CoxEvidence Quote
“The place that emitted that photon... is something like 46 billion light years away now... there's more universe beyond that. That's just as far as we can see. The universe might be infinite in extent.”
Created: 8/11/2026, 5:29:48 AM
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