Saturn — planet, shown live in Cosmoscope, a real-time 3D map of the universe.
The rings are mostly water ice — 280,000 km across yet often just 10 meters thick. Saturn is the least dense planet: it would float, if you could find an ocean big enough.
Cosmoscope puts Saturn at its true position in the solar system, computed from JPL-derived ephemeris and updated continuously. Open the live 3D view to see, in real time, how far Saturn is from the Sun and from Earth right now, how many minutes or hours light takes to cross that gap, and how fast it is moving along its orbit. Scrub the timeline to place Saturn where it was on any past date, or where it will be years from now.