"The results suggest that water was incorporated during the formation of Mars and that the planet was able to store water in its interior during the planet's differentiation, " Hauri said.
One last point: Airbnb has accumulated what they are calling one of the largest collections of interior photography on the planet, including about a million professional property shots.
To do this, they used computer models of the planet's interior and computed the possible combinations of elements and compounds that could yield the observed characteristics.