On its trip out of our solar system, this spacecraft discovered Puck, a moon of Uranus
... William Herschel who discovered Uranus in 1781 also observed the largest 
two moons,... [DOC] [TLE] Uranus and the Uranian System - The Solar System on Sea and Sky [PAR] The Uranian System consists of the planet Uranus, seventh planet from the Sun, 
and its system of moons, including Oberon, Umbriel, Ariel, Miranda, and Titania.