Pioneer 11 — spacecraft, shown live in Cosmoscope, a real-time 3D map of the universe.
First to fly past Saturn, threading between the planet and its rings in 1979. Its signal fell silent in 1995; like its twin it carries a plaque showing where it came from.
Cosmoscope draws Pioneer 11 on its real trajectory, from mission ephemeris rather than an artist's impression. Open the live 3D view to see where Pioneer 11 is right now, how far it has travelled from the Sun, and how long its radio signal takes to reach Earth. Scrub the timeline to replay the route that took it there.