Hyperion (moon)
Hyperion ( /haɪˈpɪəriən/; Greek: Ὑπερίων), also known as Saturn VII, is a moon of Saturn discovered by William Cranch Bond, George Phillips Bond and William Lassell in 1848. It is distinguished by its irregular shape, its chaotic rotation, and its unexplained sponge-like appearance. It was the first non-round moon to be discovered.
Read more about Hyperion (moon): Name, Rotation, Exploration