Le 25/06/2018 Ã* 13:17, Jeff Findley a écritÂ*:
Not near vacuum. Try again.

Obviously, bacterias that thrive in human-friendly environment won't
thrive on Mars surface.
Obviously.

But we can't know that some bacterias on earth
might be able to adapt to Mars and thrive in/below the sand.
Again, how about an example. Still waiting...

Earth Bacteria Survive a 553-Day Space Exposure on the Exterior of the ISS.
https://www.popsci.com/technology/ar...e-exterior-iss


https://www.ncbi.nlm.nih.gov/pubmed/11913418
Physical dosimetric evaluations in the Apollo 16 microbial response
experiment.

https://www.nature.com/articles/ismej201146
Exposure of phototrophs to 548 days in low Earth orbit: microbial
selection pressures in outer space and on early earth

Bacteria survive an hypervelocity impact:
https://www.sciencedirect.com/scienc...387?via%3Dihub
Survivability of Bacteria in Hypervelocity Impact
From the abstract:
....bacteria can survive a hypervelocity impact and subsequently grow.

https://www.sciencedirect.com/scienc...60982208008051
Tardigrades survive exposure to space in low Earth orbit
Tardigrades are water bears. They survive space conditions.

Enough?

I could go on...