https://budbl.com/Science/voyager-1-what-is-a-light-day/ 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... Sun, 15 Nov 2026 00:55:20 UTC en