So long, Earth

摘要

Despite hurtling along at 300,000 kilometres per second, sunlight still takes nearly 16 hours to reach Voyager 1, the most distantrnobject ever made by humans.rnAlong with its twin, Voyager 2, the NASA probe continues to send back measurements, decades after the two visited Jupiter, Saturn, Uranus and Neptune in their grand tour of the outer solar system.