Voyager 1 approaches one light day from Earth

As it heads out of the solar system never to return, the deep space probe Voyager 1 is headed for yet another cosmic milestone. In late 2026, it will become the first spacecraft to travel so far that a radio signal from Earth takes 24 hours, or one light day, to reach it.

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https://newatlas.com/space/voyager-approaches-1-light-day-from-earth/