The farthest human-made spacecraft from Earth, Voyager 1, will reach a historic milestone next week, covering a distance of one light-day.
On November 18, Voyager 1, launched in 1977, is expected to be about 25.9 billion kilometers from Earth, the equivalent of one light-day.
Let us recall that the distance to the nearest exoplanet outside the solar system to Earth, Proxima Centauri b, is about 40 trillion kilometers (about 4.2 light years).