A new look at ancient Mars asteroids shows the Red Planet had liquid water hundreds of millions of years earlier than we know it.
Scientists have long known that the meteorites NWA 7034 and NWA 7533, which landed in the Sahara many years ago, came here from Mars. According to research published Friday in the journal, scientists at the University of Tokyo say they found signs of oxidation – that shows water – from 4.4 billion years ago. Scientific advance.
Scientists pieced together the history of the oceans on Mars about 3.7 to 4 billion years. If this new research continues to be scrutinized, it means that the planet̵7;s liquid water would have been around for at least another 400 million years, before scientists could say so explicitly.
According to the study, the discovery could help reveal where the planetary water came from – either as a passenger impacting a meteor or some byproduct of planet formation.
Ironically, researchers suggest that the asteroid collisions that brought NWA 7034 and NWA 7533 to Earth could be one of the events that caused Mars to begin to dry up.
Study author Takashi Mikouchi said: “This oxidation could have occurred if there was water in or in the Martian crust 4.4 billion years ago in a collision that partially melts the crust.” . “Our analysis also showed that such an effect would release a lot of hydrogen, contributing to warming the planet at a time when Mars had a dense, insulating carbon dioxide atmosphere.”
READ MORE: Analysis of the Martian meteorite revealed evidence of water 4.4 billion years ago [University of Tokyo]
Other information about Mars: Scientists have just found three more liquid water tanks on Mars