There is a theory that Mars was once one of the moons of a large watery planet called Tiamat. Something caused that planet to ‘decompose’ sending its moons into sun orbits and a mass of water ‘splashed into one hemisphere of Mars causing the planet to tilt dozens of degrees and forming the distinct surface features of two hemispheres so different in contours. The theory goes on to imagine MArs was like a Disney land place for ‘a civilization’ to visit and marvel at.
“There is a theory that Mars was once one of the moons of a large watery planet called Tiamat. Something caused that planet to ‘decompose’ sending its moons into sun orbits and a mass of water ‘splashed into one hemisphere of Mars causing the planet to tilt dozens of degrees and forming the distinct surface features of two hemispheres so different in contours. The theory goes on to imagine MArs was like a Disney land place for ‘a civilization’ to visit and marvel at.”
More if you find Sitchin interesting. https://www.sitchinstudies.com/sumerian-solar-system.html