Conversation so far:
What is one astronomy discovery that was found by William Herschel?
Herschel discovered two moons of Saturn, Mimas and Enceladus.
Did he teach at a university?
CANNOTANSWER.
Did he work with any other astronomers?
CANNOTANSWER.

Question: What other discoveries did William Herschel find?
Self-contained rewrite: In addition to discovering the two moons of Saturn, what other discoveries did William Herschel find?