Look at the little red reference marker on its right side (these rotate around it when I'm not grabbing a screenshot) and then look at that irregular dark patch and line running across its surface toward its center. That's a 5,000 Km long "canyon" or ancient crack or closed hole left from around 3.5 billion years ago, when it was struck near its equator by a large meteoroid, estimated at anywhere between 150-200 Km in diameter, up to the size of Pluto, and this is said to have punctured its crust. Think of an ice-covered ball that big at very high velocity puncturing Mars crust and entering its molten interior. What do you think would happen? I think it momentarily blew Mars up like a balloon, cracking away its hard-surfaced exterior "shell" and its oceans, and burning off its atmosphere in the resulting blast.
And that's why it now has a very thin atmosphere of mostly carbon dioxide and carbon monoxide, left-overs from that combustion, and that's also likely why we now have all that sand, gravel, and broken rocks further out in that Asteroid Belt. Asteroids my ass! That's Mars' former skin of destroyed surface features. And its oceans? How do you spell "Comet"? Some of which exhibit tails containing colors characteristic of salt. Sea salt, I would guess. If a part of an ocean got blown into space at about absolute zero, it would suddenly freeze very quickly into a gigantic "snowball" and that "snowball" being made of salt water, would exhibit in its "tail" traces of that sodium as it passed close to our sun during its elliptical orbits. Why wouldn't those oceans and those broken rocks all go to the same general regions? Average mean density. Seawater and rocks have different ones, so they'd go in different directions and at different speeds, and they'd be affected differently by gravity - the sun's in this case. Too bad we don't have a video of all that, so we could see for ourselves.
The Moon this morning.....
This doesn't look like a very good spot for a vacation either. And I bet you're wondering why I'm showing these two bodies together in the same article. The reasons are: (1.) They have similar densities, which are unlike other terrestrial planets.....
And (2.) If we could open up that huge ancient "crack" some 5,000 Km long on Mars, and make it form a circle, that circle would be just about the right size for our Moon to pass through it. So where did our Moon come from? I think I know, but what do you think? See the kind of fun you can have, playing around with a planetarium and the information you can get Googling questions about it?
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