World

Dione

Dione is an icy moon of Saturn whose trailing side is laced with a network of bright ice cliffs, about 1 123 km across.

Key facts

Diameter

1 123 km

Goes round

Saturn

See it from here

Not by eye: Dione is magnitude 10.4, within reach of a small telescope, though Saturn’s glare beside it makes it hard.

How the map draws it

Its colours come from infrared, green and ultraviolet pictures, toned down toward what an eye would see · lit as a camera exposed for its own sunlight would show it · seen from far off it is a light at its computed brightness: the glow is how a camera records a point too bright to resolve.