How Groundwater Shaped Mars

The surface of Mars has evidence of major trama at some time in its distant past along with this evidence of ground water causing errosion. The earth has also evidence of being struck by an object the size of Mars and is believed to have caused the formation of our Moon.

Could it be that Mars did strike the Earth or passed so close as to have caused these events through graitational pull and at the same time the earth inheritted the Oceans of Mars because of its greater mass? Maybe we 'are' Martians originanly?

If Electrons on the atomic scale can leap from one energy state to another maybe we as a seeming elecron of our Sun could face such an event in the future or does this hypothysis not hold up?

Of there is water, then Man could colonize Mars. It might be difficult, but it could be done.