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 Home

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 home

Nearly a half-century after it launched from Earth, NASA’s Voyager 1 spacecraft is now approaching an extraordinary milestone: in November 2026, the craft will reach a distance of one light-day from Earth. That means any signal transmitted from Voyager will take a full twenty-four hours to reach its home planet.  That’s an incredible milestone for humanity. It is not only representative of the immense scale of space, but it also shows how a spac…