Cardman wrote:

Those finding refer to *ice*, no?


Odyssey has been finding it's water through detecting hydrogen, which
is a very good indication of water.

As far as I am aware there has been no evidence for if this hydrogen
trace of water is in solid of liquid form. Most scientists assume that
it is in the form of solid ice due to the very cold nature of Mars.

And due to the fact that liquid water is physically impossible
under those conditions.


Even then this ice should not exist in the very top of the Martian
soil due to the low pressure evaporation problem.

Nonsense. If the relative humidity above the ice is 100% then
the ice can remain stable indefinitely, even if the atmospheric
pressure is quite low.


One idea to consider is that below the soil you could well have
greater atmospheric density in trapped pockets containing liquid or
ice water, maybe even between individual grains, where certainly there
could well be warmth obtained from both above and below.

Water is not going to exist in liquid form at a depth that
the neutron detectors can see (over most of the martian surface).

Paul