From Simple English Wikipedia, the free encyclopedia
Hyperion
is a
moon
of
Saturn
. It was discovered on September 16, 1848 by
William Cranch Bond
,
George Phillips Bond
and
William Lassell
. It is irregular in shape, and has a
sponge
-like appearance. It is the second largest irregular (i.e. not
spherical
) moon in the
Solar System
, the largest being
Proteus
. It was the first non-spherical moon discovered. Its
rotation
is
chaotic
, meaning its
axis
of rotation wobbles, unlike how the
Earth
and the
Moon
rotate, or any other moon in the
Solar System
.