No life on Mars!

Research by scientists from the University of Edinburgh in Scotland  has shown that life on the surface of Mars is impossible because of the  chemical compounds contained in its surface soil.

Source 

The surface of Mars contains perchlorate compounds, which are salts of  chloric acid, and are toxic to organisms, according to the results  published in Scientific Reports.

The researchers used perchlorate concentrations, similar to those in  Mars soil, and studied their effect on Bacillus subtilis bacteria, a  bacteria usually found on surfaces of spacecraft and equipment, and a  source of bioterrorism.

In the result of the experiment, it was found that the toxicity of  these compounds to organisms increased with the presence of ultraviolet  radiation, which led to the death of bacteria in minutes.

The researchers also pointed out that iron oxides and hydrogen  peroxide, a substance found on the surface of the red planet, which  raises the effect of perchlorates, and thus die bacteria 10.8 times  faster.

Perchlorates  were discovered on the surface of the Red Planet in 2008, when the  Phoenix probe landed on Mars and analyzed its soil. At the time, it was found that the concentration of these compounds in the soil was 0.4-0.6%. These results were confirmed by the Kyorienti probe.

The  scientists concluded that the combination of these compounds with  ultraviolet radiation on the surface of Mars, prevents the existence of  strange life on the surface of this planet.