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That is sand dug by the rover's wheel, not rock, so it cannot be a fossil.
Originally posted by linliangtai
"By the way, some experts claim the Mars limb could be artifacts
produced by the Rover's RAT tool. Yes, it was possible at first
glance. However, the RAT tool could not, and never, produce
anything like those seven roundish muscle fascicles, each about 500
microns across.
Do you have any reference to the time the RAT was applied?
Moreover, the panoramic image of the Mars limb (fully
labelled for a limb's cross section) was taken before RAT was applied
to the Mars "limb" on the ground.
Originally posted by linliangtai
It could not be simply sand dug by rover wheel or sand pressed into cell/tissue structures by Mossbauer.
I didn't say that did anything, I only said that what you are looking at is sand and that is print of the RAT (or, to be correct, the ring in front of the RAT). I don't know if there are other sites where they captured similar photos, I haven't looked for that, but now I will, although I do not exactly know what I should be looking for.
The two rovers have dug up numerous sand minerals on Mars during their 7 year travel and Mossbauer had pressed numerous times onto Martian ground.
If they could do what you said, why were there no similar structures near the muscle cell/tissue? They would have produced numerous similar structures, whatever the structures were, along the way, on every site where microscopic images were taken. No chance.
I could not find any reference to the use of the RAT on that site (site 136), and using it on loosened sand would be a strange action, why would they brush (they could not grind it) sand?
Originally posted by linliangtai
reply to post by ArMaP
Please note there was no loosened sand in the figures, microscopic or panoramic, because the spot had been abraded by RAT before sol 1863.
From what? When you brush a beach what do you get? More sand!
Any loosened sand kicked up by the wheel had been scraped clean by RAT.
Could you point to a reference to that rule? Thanks in advance.
NASA does not allow microscopic images to show loosened sand.
You cannot brush away sand from sand. The rover was moving over sand, but because one of the wheels got stuck it dug the wheel in the sand. If they used the RAT to brush the sand it would show the results of the use of the high-speed brush that we can see in all places it was used.
The panoramic photo was taken after loosened sands were all brushed away.
It looks like they do allow it.
Originally posted by linliangtai
NASA does not allow microscopic images to show loosened sand.