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Combined with evidence of its occurrence deep in the Earth's mantle, this suggests that there is from one to three times the world ocean's equivalent of water in the mantle transition zone from 410 to 660 km deep.
originally posted by: Phage
a reply to: LookingAtMars
The density of Europa is one reason for theorizing a planetary ocean beneath the ice (not to mention the plumes and stuff).
How does the density of Mars compare?
originally posted by: ignorant_ape
a reply to: LookingAtMars
explain olympus mons ?
originally posted by: midnightstar
Better yet explain what is left of a magnetic feild .
A spinning iron core surrounded by liquid rock under great pressure is how that works .
Mars probably has massive amounts of underground water but is not made from the stuff . PS neither are any moons they all have rock cores as far as we know .
Even comets are maybe at most 1/3 water the rest gases and rock mixed in .