[SunkenCiv]

Caption: This is a cross-section of a chondritic meteorite.

[HChampagne]

Why hasn’t there been more water discovered on Mars?

[exDemMom]

Earth's volatile elements -- which include hydrogen, nitrogen, and carbon -- and possibly organic material, too.

Oh, dear. I guess all the scientists were out to lunch when it came time to proofread this?

I never thought of carbon as being particularly volatile. I suppose some carbon compounds might fit that description, but not elemental carbon. And I wonder what the "organic material" could possibly be, if not carbon and hydrogen?

[Swordmaker]

Every comet we have visited HAS NO WATER. They are essentially identical to every other asteroid, dry and essentally a rock. The cometary appearance is an electrical phenomenum, not an outgassing of water vapor from ice. That alone falsifies this flawed premise.