NASA discovered possible evidence of life on Mars. To search for Martians are preparing a planet rover.
|Mars 2020 | NASA discovered possible evidence of life on Mars|
Microbial remains may be found in carbonates and stromatolites.NASA experts have stumbled upon carbonate deposits in the western region of the Martian Ezero crater. They concluded that there was probably a lake there.
Researchers were also interested in sediments along the edges of the crater. They may show signs of ancient microbes, if not the whole ecosystem. Information about the geological study of the crater carbonates, where the rover "Mars-2020" is planned to be sent, was published in the journal Icarus.
According to scientists, carbonates appeared on Earth from the interaction of carbon dioxide, water and rocky materials. Being precipitated in the water, carbonates preserve the remains of the microcosm.
They believe that they appeared on Mars when the atmosphere was rich in carbon dioxide and the climate was wet.
The probe found carbonates on the red planet back in 2008. They concluded that the conditions for their appearance existed 3.8-4 billion years ago.
On Earth, carbonates are often formed simultaneously with stromatolites. These rock formations, which testify to the possible life of microbes, may be found on Mars.
What the spectral analysis has shownScientists at Purdue University (USA, Indiana) have done a spectral analysis of the crater. The Mars Reconnaissance Orbiter satellite was equipped with a CRISM spectrometer. The method found that erosion had less impact on the western delta. Together with neighboring areas it was photographed 10 times.
The spectrum was analyzed on the chemical composition of mineral deposits, the ratio of carbonates and similar components was calculated. Most of the carbonates were between the western delta and the edge of the crater.
They discovered "coastal carbonates", the composition of which is close to stromatolites and similar lake sediments. They often contain biofuels, isotopes, organic particles and biominerals left over from microbes.