In recent months NASA’s Voyager 1 became the furthest spaceship from earth. It is now more than 11 million miles away from us and still travelling. It was launched 36 years ago in 1977 and was followed by its sister ship, which was imaginatively named, Voyager 2.
Voyager 1 is expected to leave our solar system soon and scientists will measure this based on three criteria; an increase in cosmic rays, a reduction in the particles it encounters from our solar system and a change in direction of the magnetic field. The first two have already occurred! It has enough battery power to run until 2025, at which point we will lose contact with it. But in the meantime click here to track Voyager’s progress.