Resembling a lumpy chunk of coral floating through space, Hyperion is one of the weirdest moons not just of Saturn, but in the whole solar system. Its shape is irregular, its rotation is chaotic, and it looks oddly spongelike. On Sept. 26, 2005, Cassini completed its first flyby of this bizarre moon, giving NASA bothContinue reading "Sept. 26, 2005: Cassini visits Saturn’s weirdest moon"