Planetary scientists from Konkoly Observatory in Budapest have modeled the emergence of salty but liquid water on the surface of Mars. According to the results of Bernadett Pál and Ákos Kereszturi, late night and early morning hours during Martian spring and summer could be ideal times for the process to occur, with conditions being more favorable in the northern hemisphere. They examined how effectively hygroscopic salts, which have an affinity to adsorb or absorb water vapor from the atmosphere, enter solutions to form brines.
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Source: Phys.org