Hyperion

One of these images is a moon of Saturn, one is a fossil coral?

Hyperion is one of Saturn's moons, highly irregular in shape and rather intriguing.  I was looking through the NASA Cassini images and realised how much one of my many fossils resembled Hyperion.  I thought I would place images of of both side by side for all to see!  Guess which is which.

Hyperion is the largest known irregular body in the solar system. Its average diameter is 270 kilometres but being potato shaped its best described by dimensions along three axes (410x260x220 km).

Many of the crater walls are bright which suggests an abundance of water the crater floors are dark with a red colouration.

Hyperion is the rock on the right.

Hyperion Discovery
Discovered by	William Bond George Bond William Lassell
Discovery date	16 September 1848
Designations
Alternative names	Saturn VII
Adjective	Hyperionian
Orbital characteristics
Semi-major axis	1,481,009 km[a]
Eccentricity	0.1230061[1]
Orbital period	21.276 d
Inclination	0.43° (to Saturn's equator)[2][3]
Satellite of	Saturn
Physical characteristics
Dimensions	360.2×266×205.4 km[4])
Mean radius	135.00±4.00 km[4]
Mass	0.56199±0.005×1019 kg[4]
Mean density	0.544±0.050 g/cm3[4]
Equatorial surface gravity	0.017–0.021 m/s2 depending on location[4]
Escape velocity	45–99 m/s depending on location.[5]
Rotation period	chaotic
Axial tilt	variable
Albedo	0.3[6]
Temperature	93 K (−180 C)[7]
Apparent magnitude	14.1[8]

Credits to NASA JPL and Wikipedia