The Voyager 2 space probe has been in operation since 1977 and is the only spacecraft to visit Uranus and Neptune.
Like their sister, Voyager 1, they are both life seekers. The two also carry a spatial message with key information about humanity: a gold disc with information about human biology, greetings in all languages, sounds of the planet, and even a map of coordinates to find the Earth.
Voyager 2 is currently making its way into interstellar space, where its sister ship Voyager 1 has resided since August 2012. During its journey through the outer solar system, Voyager 2 visited all four gas giant planets, and he also discovered and photographed many of the moons of the planets.
The Neptune spacecraft flyby in 1989 put it on a course below the elliptical plane that will eventually carry it into interstellar space. In 1998, engineers unplugged the spacecraft's nonessential instruments to conserve power. Data for at least some of the six instruments that are still in operation should be received by at least 2025.
