Source checked 4 November 2026. NASA’s November guide highlights Voyager 1 approaching a distance of one light-day. A light-day measures distance: it is how far light travels in 24 hours.
Near that distance, a radio command takes roughly a day to reach the spacecraft, and a response takes roughly another day to come back. That is the signal travel time alone. Scheduling an antenna and processing the command or response can add time, so mission operations are planned well ahead.
Leave a Reply