The moon contains 5 major divisions in its interior.
It shows a portionof the Moon's heavily cratered far side.
Northward-trending fractures, likely caused by a change in the moon's rate of rotation and the consequent flattening of the moon's shape, rip across the southern hemisphere.
The rugged terrain seen here is typical of the farside of the Moon.
Last month, Cassini dove through some of these plumes and determined that they contained water vapor laced with small amounts of methane as well as simple and complex organic molecules.
New Map of Water in Moon Dust - Sky & Telescope
Verysmall but real librations (maximum about 0°.04) are caused by theeffect of the Sun's gravity and the eccentricity of Earth's orbit,perturbing the Moon's orbit and allowing cyclical preponderances oftorque in both east-west and north-south directions.
Titan is the largest moon of Saturn
Thereis only residual tectonic activity due to cooling and tidal forcing, butother moonquakes have been caused by meteor impacts and artificial means,such as deliberately crashing the Lunar Module into the moon.
How to Make Sun and Moon Water - Dancing with Water
Meteoriticimpacts brought a variety of "exotic" rocks to the Moonso that samples obtained from only 9 locationsproduced many different rock types for study.
Moon Statistics - Views of the Solar System
The impacts alsoexposed Moon rocks of great depth and distributed their fragmentslaterally away from their places of origin, making them more accessible.