"We've found water on Mars!" - Not Exactly...

There's a big difference between water trapped in permafrost, and a hot bath or a tall cool glass of drinking water. And Mars' water wasn't lost, it was blown away in a monstrous almost unimaginable explosion about 3.5 billion years ago when a meteoroid between 100 and 200 Km in diameter came from deep space and hit it, puncturing its crust.  Try to imagine the kind of explosion that would create when such a frozen body hit the molten core of Mars.

Here's an excerpt from 'The Larousse Guide to Astronomy' on the subject of Mars' evolution:-
Volcanic plains and basins record the second phase of evolution. The basins were dug by impact from large bodies: the Hellas region displays a diameter of 2000 Km, testimony to a meteoroid between 100 - 200 Km in diameter puncturing the crust more than 3.5 x (10 to the 9th) years ago. ........
In one area of Mars, the Tharsis region, huge volcanic cones rise from an uplifted plateau. Olympus Mons is more than 600 Km across and 25 Km high with a caldera about 80 Km across. Vertical cliffs 2 Km high ring the periphery indicating atmospheric and dust erosion on a wide scale. A major tectonic event has rent the surface just south of the equator and produced a 5000 Km long canyon up to 140 Km wide and nearly 5 Km deep.
Most important, however, are the regions of polar and sedimentary modification. Several areas at mid-northern latitude contain sinuous channels identical to dried river beds which together with glacial scrape marks indicate a very different environment earlier in the planet's history.

Now then - let's assume for a moment that 5000 Km long 'canyon' mentioned is actually an old closed-up hole in the crust. If we took the sides of that 'canyon' and formed them into a circle, we could probably fit our Moon through the hole.
And it might have been a circular hole for a brief moment or two after the explosion inside the molten core caused by the puncturing of the crust due to the impact of that meteoroid mentioned in the text. That unimaginably huge explosion might momentarily have inflated the planet from the inside, causing it
to blow off its outer shell of hard surfaces and oceans into space, and something
(possibly our Moon) may have been expelled out the other side through what we now think of as that 5000 Km long 'canyon'. Why would I think that?

Because: Mass and volume are 0.107 and 0.15 times the Earth respectively, displaying a calculated mean density of 3.9 g/cubic cm. This is considerably lower than the other three terrestrial planets but similar to the Moon's.

So, back in the beginning, both Mars and Earth may have looked very similar,
and possibly might have been somewhat closer to the Sun, until that period of intense bombardment caused Mars to be hit, punctured, and virtually destroyed as a potentially habitable planet.  I speculate that they were closer to the Sun at earlier times, because during our dinosaur ages and before that, our planet seems to have been either tropical or semi-tropical all over - and that implies being closer to the heat source in our ecosphere. However, adding mass and therefore energy to our system during that bombardment may have created the same sort of situation as occurs when an atom is bombarded by a foreign particle and then becomes 'excited' with its electrons assuming slightly higher orbits around its nucleus.

And I hear you asking "So where did those hard surfaces and oceans from Mars go, after being blown into space?" Another postulation for you: dirt and rocks have a different relative density than water, so each would drift off in different directions. So take a look at the Asteroid Belt for the sand, gravel, rocks, and dirt, and take a look at the Comets for the oceans - and before you say I'm crazy, may I remind you that one or two recent comets have exhibited evidence of sodium (as in salt) in their tails, suggesting possibly a salt water source.
And it's very possible that I am crazy, but it's also just possible that truth is still stranger than fiction, and there's a reason for everything if we know where to look for it. So please! Prove that I'm full of shit. Hopefully before I die of old age. And in the process, you may discover that atoms and solar systems are governed by the same rules, all being part of the same universe by the same Creator. And I'm not going to get 'preachy'. Someone else can do that.