New Horizons could also be heading someplace new at terrific speeds, however humanity does have a coupe of different area probes which might be already a lot additional out. Launched in 1977, Voyager 1 and Voyager 2 performed an unforgettable Grand Tour of the planets. Voyager 1 photographed Jupiter and Saturn, whereas Voyager 2 visited Jupiter, Saturn, Uranus and Neptune – the latter in 1989 – to take humanity’s solely images of these two outer planets. They did it by making the most of a uncommon geometric association of the outer planets, however their journey continues.
They’re presently serving to astronomers outline the road between our photo voltaic system and interstellar area, touring at 35,000mph and protecting an additional 900,000 miles every day. Each Voyagers nonetheless ship again information on magnetic fields, charged energetic particles and radio waves of their environment, whereas Voyager 2 provides a plasma sensor, which measures the (massively lowering) photo voltaic wind. NASA doesn’t anticipate these devices to work past 2025.