Question

Recite an old feature indicative only to the Great Moons of the Outer Solar System.

Answer 1

There is presence of ice on outer moons of our solar system .

The outer planets and their moons formed much farther from the Sun, in a region where water, carbon dioxide, and other “gases” condensed into ice .

For this an additional requirement is that a moon did not form in the inner region of a proto-satellite disk, which is too warm for ices to condense.

Europa is thought to contain 8% ice and water by mass with the remainder rock.

Jupiter's outer two Galilean moons Ganymede and Callisto contain more ice since they formed further from the hot proto-Jupiter.

Titan is known to have stable pools of liquid methane on the surface