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In this question I am just asking if there have been any determinations, either inferred from observations or from simulations, of the pressure of the water at the top of the ocean where it meets the ice … In that case, if there is a crack, the water would rise approximately to the surface of the ice and the pressure would drop to approximately zero. …

and There's a lot of subsurface water ice at many mid-latitude sites..., I'm wondering how a water resources map will be generated in the next few decades to identify the best candidate locations for water-intensive … Some of the earlier data is mentioned in answers to the question What's the scientific evidence of water for return trip methalox on Mars? …

When I look at the spectra in Figure 1 (shown below) I just don't see any difference between them in the three bands used to zero-in on water. … Can someone explain how to see the difference between water-containing and non-water-containing pixels? Or is the difference only detectable algorithmically? …

NASA Chief Scientist Jim Greene asks: Can we go (to the Moon) and drink the water? … The source of the water in this case would be ice deposits to be found in permanently shaded areas on the Moon. Is there any speculation on how radioactive water on the Moon might be? …

update: Water at the poles has some more recent news: Science: 03-August-2018 Radar evidence of subglacial liquid water on Mars EarthSky.org: 28-Sept-2018 Pink lagoon provides clues to possible Mars … and for hydrogen for fuel (and perhaps other uses) on Mars might really need to come from water ice near the poles. …

In which volume was the water trapped? On which optical surfaces did it cause the problem? … Did the water get driven away or does the camera always have to run at +4 °C to run haze-free, or can it be operated at -90 °C? …

So yeah, if you wanted to mount a mission to Callisto, it wouldn't be too hard, Callisto probably has a fair amount of water ice, and very likely has liquid water in places, just not as much as say Europa … related to Europa's subsurface water (and potentially contaminating it): Have there been any determinations of the water pressure in Europa's ocean just below the ice? …

The Ars Technica article NASA seeks industry help with lunar landings, potentially sample return discusses the potential value of ice on the moon as a source for fuel in future space missions. Ice su …

There are wide ranges of temperature and pressure present in the solar system and there seems to be a lot of agreement that water should be present in many of these, most frequently as ice. … Future prospects: (or prospecting) OSIRIS-REx will return a bit of a comet to Earth, although by the time it collects its sample the surface of Benu will probably be warm enough that any water ice that …

Carrying a pint of liquid water as fuel, the system will split the water into hydrogen and oxygen in space and burn them in a tiny rocket engine for thrust. … The system applies an electric current through water to chemically separate water molecules into hydrogen and oxygen gases, in a process called electrolysis. …

The ice layer formed on the porous plates during sublimation prevents the slightly pressurized water from flowing through the metal pores. … The Enthalpy of Sublimation of water is about 51 kJ / mole , or about 2.8 million J/kg or 2700 BTU/kg. …

EDIT: I am not asking if you think finding water is necessary for a return flight. I'm asking for the scientific evidence that there is mineable water on Mars that could be used for this purpose. … Supplementary data NASA JPL Recurring Martian Streaks: Flowing Sand, Not Water? …

The reasons that ice and liquid water can return reflections are a little complicated, but include that that the individual molecules are polar so the ice or water-containing material is polarizable (dielectric … Some minerals can have high dielectric constants and those containing metal particle (e.g. pyrite) can have conductivities comparable to salt water. …