Space Daily August 24, 2026 • 04:53

The universe is 13.8 billion years old, yet the observable universe is about 93 billion light-years across. That isn’t because light broke its own speed limit: while the oldest light travelled toward us, the space separating us from its source continued to expand, lea - Space Daily

The 93-billion-light-year observable diameter is a present comoving distance, not the length travelled by ancient photons. Distinguishing four cosmic horizons resolves the paradox.

The apparent contradiction begins with a calculation that would be perfectly reasonable in a static universe. Light travels one light-year per year. If the universe is 13.8 billion years old, the mos… [+12073 chars]

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The universe is 13.8 billion years old, yet the observable universe is about 93 billion light-years across. That isn’t because light broke its own speed limit: while the oldest light travelled toward us, the space separating us from its source continued to expand, lea - Space Daily

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