reply to post by hoghead cheese
This answer could be answered if we are able to get a lander with heavy duty digger or auger to drill into the soil. Just with those
tires, it revealed ice water and salts. It would be even better if we could get people onto the planet, but that is still far off
that you say that, because at the end of The Universe
episode, an astronomer said that we will never truly know just how much water is
underneath the surface and if life exists until humans are actually there. Until we set up a system of actually doing some serious digging and
drilling, we will only have surface clues that indicate whether or not life/water are present.
All of the evidence makes it pretty clear though, water definitely was on the surface of Mars at one point, and seems to still exist underground.
There are some clues that life was present too, but not any absolute proof. Hopefully if our government gets it's priorities straight and quits
spending most of the taxpayer money on wars, we can get the space-travel ball rolling and find out for sure if life exists on Mars. IMO that should be
one of humanities top 5 priorities: exploring the universe.
Titan, a moon of one of the outer planets, is also thought to possibly harbor life, because it's thought to have deep
oceans underneath the
surface. There's another moon of the outer planets that's thought to have liquid water oceans too, I want to say Europa, but I could have it mixed
up. The moon I'm referring to has a cracked eggshell like surface, it's covered in ice that's constantly shifting and cracking, I think because of
the tidal forces from the planet that it orbits. So just in our solar system we have three possible bodies that could have life, Earth excluded.
That's just one solar system, and there are thought to be around 50 billion planets in the Milky Way Galaxy alone. And that's just one galaxy out of
hundreds of billions or even trillions in the visible universe.
I believe and others have too (Richard Hoagland, etc.) that Mars was a moon of a planet that exploded (which formed much of the asteroid belt
and threw debris around the system, wonder about the asteroids that made the dinosaurs extinct).
I've never heard of that theory, but I've
heard a similar one that the asteroid belt most likely came from a destroyed or failed planet. I would find your theory more believable that it was
actually flipped; Mars had a moon that was destroyed and it formed the asteroid belt. I feel that Mars is too big to be a moon of an inner planet, but
I could be wrong, because there's a moon in our solar system, Ganymede I think, that's MUCH bigger than Earth's moon.
If I could pick a body for life to evolve on, I would pick one of Saturn's moons, because imagine looking in the sky and seeing those huge rings
every day. That would be awesome.