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Voyager 1: What Is a Light-Day
(science.nasa.gov)submitted 3 hours ago by budbl.com (#1) to Science | discuss | bury
NASA explains that Voyager 1 is about to reach one light-day from Earth, a distance of about 16 billion miles, or how far light travels in 24 hours. The agency says the spacecraft will hit that mark on Wednesday, November 18, 2026, at 5:16:07 a.m. EST, after nearly 50 years of flight. At that point, radio signals from Voyager 1 will take 24 hours to reach Earth. Voyager 1 is traveling at nearly 38,000 mph and entered interstellar space in 2012.