Salt water periodically appears on Mars


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Salt water periodically appears on Mars

The possibility of the existence of liquid water on the surface of Mars was first proved in 2000, when the Mars Global Surveyor spacecraft discovered channels on the red planet formed by flows of then unidentified liquid. Subsequently, the presence of large reserves of water and ice on the planet was predicted by the Phoenix rover, which operated in the circumpolar zone of Mars. It is known that then scientists encountered a solid white substance that evaporated literally a few days after detection. Almost elusive Martian water was found at the bottom of some craters, as well as under the surface of the planet's rusty color. New studies of the surface of Mars, published on phys.org, show that streams of very salty water can form on the red planet for several days a year. What can give their discovery for modern science?

Mars surface

Is there water on Mars?

Due to the rather harsh climatic conditions on Mars, water, even in solid form, quickly sublimates into the atmosphere of the red planet, dispersing long before it reaches its melting point. However, as shown by the research of the senior researcher at the Institute of Planetology, Norbert Schorghofer, on the fourth remotest planet of the solar system there are several areas of great interest to the scientific world. So, in some areas, usually lying in the middle latitudes, you can find shaded areas where a large amount of ice accumulates during the long Martian winter. When the sun rises again in spring, the ice suddenly heats up. In detailed model calculations, the temperature rises from -128 ° Celsius in the morning to -10 ° Celsius at noon – a colossal change over a quarter of a day. In such a short time, not all ice has time to get lost in the atmosphere.

See also: How dangerous is radiation on Mars?

Due to the extremely thin atmosphere of Mars, the ice melting mark on the planet is much lower than on Earth

Due to the fact that the salt significantly lowers the melting temperature of H2O, the Martian liquid can form even at a temperature of – 10 ° C. In addition, so-called carbon dioxide ice, often used on Earth in cooling installations, appears in shaded areas.

Despite the fact that today the Martian liquid is an extremely salt-saturated substance, in ancient times, local water had a quite comfortable level of acidity and could even become the source of the origin of local life. Be that as it may, even if Mars never had at least its simplest inhabitants, the discovered sources of fluid can help future Earth colonists to create future outposts and settlements. So, even seasonal streams can indicate the presence of more extensive reservoirs of moisture hiding beneath the surface of the planet, which, in turn, can be used to irrigate specially equipped greenhouses on the equator of Mars in the near future.

And what do you think, will mankind have the resources and courage to finally decide on the ambitious construction of the first extraterrestrial colony?

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