Research results that liquid water may be present on 40% of the surface of Mars
Among the planets of the solar system, Mars is known to have a particularly similar environment to the Earth, and in 2018 NASA
Distribution and habitability of (meta) stable brines on present-day Mars | Nature Astronomy
Mars might be full of puddles but they're too cold to support life-CNET
Mars' Climate Modelled To Understand Its Habitability-Astrobiology
It is not confirmed that life exists on Mars at the time of writing the article, but some scientists think that if liquid water exists on Mars, life may be in it I also have However, because Mars is extremely dry and the atmosphere that prevents water evaporation is dilute, it has been considered very unlikely that liquid water could exist.
On the other hand, previous
Salt water freezes and evaporates more slowly than regular water, so even in extremely dry and dilute Mars environments, in some cases very saline liquids may be present. There is a possibility that water exists. Therefore, the research team studied the possibility of salt water and life existing on the surface of Mars by combining the thermodynamic model of Mars and the climate model.
Research team uses computer model of Mars atmospheric conditions to predict how likely perchloric acid-containing salt water will exist on the surface of Mars or in shallow underground, and for how long it will remain stable I did. As a result, it has been shown that salt water may exist up to 40% of the surface of Mars from the equator to high latitudes. Although the existence of salt water has not been proven, the possibility of liquid water in such a wide area on Mars has never been considered.
However, it seems that salt water stays on the surface of Mars for about 6 hours at maximum, and the period during which salt water can exist is only about 2 weeks in Earth time. Also, since salt water can exist only in the ultra-low temperature environment of about minus 48 degrees, it can be said that the environment is too severe for life to survive. Therefore, the research team states that life is very unlikely to exist even if salt water exists on the surface of Mars.
'These new findings will contribute to future research into Mars' habitability and reduce some of the risks in Mars exploration,' said co-author
in Science, Posted by log1h_ik