TRITON
Triton is the largest natural satellite of the planet
Neptune, and the first Neptunian moon to be discovered. It was discovered on
October 10, 1846, by English astronomer William Lassell. It is the only large
moon in the Solar System with a retrograde orbit, an orbit in the opposite
direction to its planet's rotation. At 2,710 kilometres (1,680 mi) in diameter,
it...
