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originally posted by: wildespace
This is just darker dust/sand underneath the lighter iron oxide coating that gives Mars its familiar red colour.
This material has been exposed when the rover took scooped samples for chemical analysis:
or even exposed by the rover's wheels:
originally posted by: ParasuvO
originally posted by: wildespace
This is just darker dust/sand underneath the lighter iron oxide coating that gives Mars its familiar red colour.
This material has been exposed when the rover took scooped samples for chemical analysis:
or even exposed by the rover's wheels:
Those tracks appear to be damp, one more than the other, how can you account for the exact effect as slightly damp dirt/sand
under the dry surface ??
I couldn't find humidity data there, but someone on the Unmanned Spaceflight Forum commented to me that Mars is dryer than the Death Valley in California.
In case anyone's interested, here are the "weather reports" from Curiosity's instruments: cab.inta-csic.es...
I couldn't find humidity data there, but someone on the Unmanned Spaceflight Forum commented to me that Mars is dryer than the Death Valley in California. On the other hand, this article by NASA says that Curiosity's data shows that salty brine could form in the martian soil for short periods of time: mars.nasa.gov...
But liquid brines might be abundant across Mars’ surface. So, some further trekking might eventually reveal whether any salty critters still call those soils home.
The probes dug into the ground, examining rocks and performing experiments. In 2008, Phoenix turned up small chunks of bright material that disappeared after four days, leading scientists to surmise that they were pieces of water ice.
originally posted by: FlyingFox
Doesn't the low humidity make dampness an unlikely condition?
originally posted by: poncho1982
"Dust Trickles".....LOL
Sometimes, the right answer is the simple one.
It's water. Mars has liquid water.
It's time to stop denying the obvious.