It is believed that life on Earth arose 3, 7-4 billion years ago. But the recent discovery of the University of London's scientists can move this date even further into the past - up to 4, 28 billion years.
In the study of the ancient layers of terrestrial crust near Quebec, Canada found possible traces of ancient microorganisms. Scientists managed to detect small hollow balls, similar to the traces of gases release during the decomposition of living beings. What was their surprise when inside the balls they saw the finest tubes filled with hematite - iron mineral. Experts suggested that the deposit data could leave the ancient microorganisms inhabited in geothermal sources that were very numerous in our planet's early era. Such traces are left and modern microorganisms living near geothermal sources and feed on inorganic compounds and iron.
The age of the studied rocks dates into 4, 28 billion years, that is, they were formed in just 260 million years after the emergence of the Earth itself. If dating is really true, then this not only moves the date of life on Earth further into the past, making this process even more mysterious, but also gives hope for a possible existence in the past life on other planets of the solar system.
This, of course, is about Mars. It is believed that the early stages of the life of the Earth and Mars were very similar - the huge ocean splashed on the surface of the planets, heated by geothermal sources. It is possible that the future expeditions on the Red Planet will be able to find traces of the ever existed life.