"Why did Mars no longer exist life?" Scientists clarify the reasons

ByKevin Gill

It is thought that there was once water on Mars, which is the subject of the next planet exploration and attracting attention as a migration destination for human beings, and some kind of microorganisms were alive. However, on the other hand, research has revealed that the surface of Mars is covered with spongy-like rocks and it is in a condition that can not create the environment where life exists.

The divergent fates of primitive hydrospheric water on Earth and Mars | Nature
https://www.nature.com/articles/nature25031

Scientists finally establish why there is no life on Mars | The Independent
http://www.independent.co.uk/news/science/life-on-mars-no-oxford-university-proof-explanation-ufo-alien-a8120796.html

The results of this research are presented by the research team of Oxford University. Investigating the characteristics of the outer shells that make up the Martian surface says that it changed to a place not suitable for the existence of life by the functioning of the water that was once in Mars.

It is thought that water existed on the surface of Mars three billion years ago like the earth, but the surface of the present Mars is full of rocks and desolate scenery spread. Scientists from all over the world are studying about why the water that once existed disappeared, and the idea that the scientists around the world are conducting research and are released into outer space due to the change and weakening of the magnetism It has been cast.


In this paper, the research team says that water is still left on Mars and is trapped in the rock with chemical substances on the surface and chemical changes. Dr. John Wade, who led the research team, said, "On Mars, a new basaltic shell was created by the reaction of newly released lava with water, creating a" sponge-like effect. "

The "sponge-like effect" mentioned in this context means that the chemical reaction between water and rock changes the mineral composition of the rock and as a result the surface of the planet is dry, the environment is not suitable for the existence of life It creates. Although this phenomenon is thought to be also the primitive stage earth, the level of the effect has changed variously due to factors such as the composition of the planet, and it has been divided into a planet that can hold the life like the earth and a planet that is not like that Thing.

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It is thought that the proportion of iron occupied by the proportion of substances that make up Mars was too high, that Mars became a planet with a dry land. Dr. Wade said that Mars changed to a planet with a higher degree of oxidation than the Earth, etc. due to too much iron in the rock or its lava.

However, this rock has characteristics that it absorbs 25% more moisture than other kinds of rocks. And the water absorbed in rocks is shown in the paper as it sinks deep into the crust. In other words, there is no water on the surface of the present Mars, but there is a possibility that water will remain inside the crust. About this, Professor Jim McWellwein of Durham University in the UK said, "It is already known that there was a great deal of water on Mars, but that water still exists as" ice " I can think of it. "

This study showed that the composition of the rocks that make up the planet determines whether the planet will be suitable for the existence of life. Dr. Wade shows the intention to conduct similar investigations on other planets of the solar system such as Venus.