Voyager 1 to Reach 25.9 Billion Kilometers From Earth in November 2026
Updated
Updated · Sky at Night Magazine · May 25
Voyager 1 to Reach 25.9 Billion Kilometers From Earth in November 2026
5 articles · Updated · Sky at Night Magazine · May 25
13 November 2026 is the date NASA expects Voyager 1 to hit one light-day from Earth, putting the probe about 25.9 billion kilometers, or 16.1 billion miles, from home.
61,000 km/h is carrying the 1977 spacecraft toward that mark as it continues returning interstellar science more than 48 years after launch, despite many instruments already being shut down to save power.
Three instruments still operate—a magnetometer, an electron-density sensor and a low-energy particle detector—after Voyager 1 crossed the heliopause in 2012 and entered interstellar space.
2036 is when NASA expects the signal to become too faint to detect, after aging thrusters and steadily declining plutonium-238 power eventually end communications.
5.6 times Neptune's distance from the Sun will still equal only 0.0027% of the way to Proxima Centauri, underscoring how small even Voyager 1's record-setting journey is on an interstellar scale.
What final secrets could Voyager 1 reveal before its eternal silence around 2036?
Is nursing a 50-year-old probe delaying the next leap in interstellar travel?
Does Voyager's Golden Record, launched in 1977, still represent humanity today?
Voyager 1 Nears One Light-Day from Earth: Power Challenges, Engineering Triumphs, and the Legacy of Humanity’s Most Distant Explorer
Overview
Voyager 1 is set to reach a distance of one light-day from Earth by November 2026, meaning signals will take a full day to travel each way. As the spacecraft nears its 50th anniversary in 2027, dwindling power becomes a critical challenge. Mission managers remain optimistic, aiming to keep at least one instrument running into the 2030s. To achieve this, engineers are implementing critical power-saving maneuvers, maximizing the mission’s longevity. These efforts ensure Voyager continues to send back unique data from interstellar space, pushing the boundaries of human exploration even as its resources diminish.