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originally posted by: Raggedyman
a reply to: FossilLin
Seems like a bit of a stretch
Didn't scientist once say some fossils were found on a meteorite and some still do believe that though it's been proven wrong
Interesting but unlikely, assumption is not empirical
originally posted by: FossilLin
a reply to: Raggedyman
"You find something on a rock and it looks like something so logically it must be aliens "
I don't know exactly what you are referring to.
Anyway, let's focus on ooids on Mars. Ooids, like pearls, are products made by life. Ooids are not made by geological processes.
The chemistry of ooids are not only complex but also varies greatly among different ooids. So, there are no chemical compounds that can define all the ooids. DNA can define humans, but not ooids.
Ooids have concentric layers, but individual concentric layers are often 1 to 3 micrometers in thickness. Individual concentric layers cannot be seen by any rovers on Mars. Thin sections and surface polishing are required before microscopes can show them.
I am always surprised when people are so damned sure