In a new article published in the journal 'Nature Geoscience', researchers indicate the presence of rare gases, corresponding to those 'measured in the atmosphere of Mars'. Interestingly, in 2012, a French meteorite dealer brought specimens of western desert origin, containing garnet inclusions, which, they claim, formed on Mars about 4.4 billion years ago, providing information about its early development and evolution of Earth. And, although terrestrial research missions have not been able to bring back samples of Martian rock types to Earth, some of them still reached us through meteorites. Brigitte Zanda, a meteorite specialist from the National Museum of Natural History in Paris, states that the origin of these rock types, weighing 400 kilograms, collected from all over the world, was determined thanks to 'rare gases, preserved in some of these Martian stones upon their ejection into space'. One of the meteorites, including NW07533, known as 'Black Beauty', also had a complex composition and differed in density from other Martian meteorites. Its internal dark and pinkish part with rose and white grains consists of inclusions of scales and dust, melted after collisions of one or several pieces with the southern shell of Mars' ancient reliefs. Zanda claims that all Martian meteorites found to date are 'close to the basalt'. These findings are strong evidence of the existence of water on the surface of Mars in the distant past, as these phenomena became visible through waterlogging in the magma. However, since Mars is significantly smaller than Earth and originally retained a lower temperature, 'its core began to renew very early', according to the researchers. These Martian garnets, dating back approximately 4.4 billion years, shed light on the geological evolution of our early planetary years in conditions 'of a substrate similar to those of ancient examples of scale types on Earth', according to Zanda.
