# 5 - Mars

Mars is considered a Dead planet, but it is a little bit less dead than moon in the full gradient of planet deadness.
So a little more water atmosphere and volcanism. but much less than earth.
so it is hollow like moon but with less hollowness. hollowness is directly proportional to deadness.
Earth is a tiny bit hollow. sun a tiny little bit and so on.

its moons were ejected plasma from inside you can think of its moons creation:
Hellas Basin → Deimos (tiny moon)
Large crater and tiny moon, because as plasma was super hot and super fast most matter escaped to espace before crystallize into moon

Korolev Crater → Phobos (larger moon)
as plasma was not so hot it passed not as expanded and cooled down faster resulting in a larger moon.