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Voyager 1 launched in 1977 on a four-year mission, and in November 2026, nearly half a century later, it will become the first object ever to reach one light-day from Earth — so distant that a signal now takes a full 24 hours to cross the emptiness back h
Voyager 1 set to become the first human-made object a light‑day away, stretching its signal to a full 24‑hour round‑trip