Science

NASA’s Voyager 1 is about to reach a historic one-light-day milestone

On November 18, Voyager 1 will reach a distance of one light-day from Earth, making even the simplest round-trip communication take 48 hours.

✦ Extractive summary — built from the sources' own reporting•From 1 source•1 min read•Updated November 3, 2026, 8:11 AM UTC

NASA’s Voyager 1 is approaching an extraordinary milestone nearly 50 years after its launch, even as engineers battle dwindling power and mysterious technical problems.

A clever energy-saving maneuver has extended the spacecraft’s scientific mission, while an unexplained 48-hour communications blackout recently gave NASA a scare.

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