Whereas earlier analysis has advised Mars was moist about 3 billion years in the past after which misplaced its water, the brand new examine, printed within the journal Science Advances on Wednesday, suggests the Crimson Planet might have had water exercise simply 700 million years in the past.
Though research have advised historic Mars was a moist and liveable planet, the newest epoch of Mars’s geologic historical past, Amazonian, is commonly regarded as chilly and dry.
Within the newest examine, scientists, together with these from the Chinese language Academy of Sciences in Beijing, assessed information from the rover that landed within the southern Utopia Planitia area on Mars.
They assessed the information from three totally different chemical evaluation devices aboard the rover – a laser-induced breakdown spectrometer (MarSCoDe), a telescopic microimaging digital camera, and a short-wave infrared spectrometer.
Primarily based on the evaluation, researchers discovered proof of “hydrated sulfate/silica supplies” on the geologically younger Amazonian terrain on the touchdown website.
The analysis suggests the world explored by the rover is manufactured from a tough layer of soil, or duricrust, with totally different traits in comparison with rocks seen at different areas on Mars that will have risen from salty groundwater, slowly evaporating, and cementing the duricrust.
These minerals, researchers say, have been doubtless fashioned with substantial liquid water originating from both “groundwater rising or subsurface ice melting”.
“In situ proof for aqueous actions recognized at Zhurong’s touchdown website signifies a extra lively Amazonian hydrosphere for Mars than beforehand thought,” researchers wrote within the examine.
Scientists say a greater understanding of how lately Mars had liquid water may assist estimate how a lot water might stay on the Crimson Planet in ice or mineral type.
Primarily based on the findings, researchers additionally speculate Mars might have gone by way of cycles of local weather, altering from moist to heat, and dry to chilly, as an alternative of present process a single dramatic shift.
“The Zhurong touchdown website (and the northern lowlands) might comprise a substantial quantity of accessible water within the type of hydrated minerals and presumably floor ice for in situ useful resource utilisation for future human Mars exploration,” they added.
As a part of its major mission to search for indicators of life on Mars that lasted for 3 months, Zhurong has investigated the minerals, panorama, and distribution of water and ice within the Utopia Planitia area.
To date, the rover has lined about 2km (1.24 miles) in over 350 Martian days, which means extra insights into the Crimson Planet are nonetheless more likely to come from its missions.
In one other examine printed on Wednesday in the identical journal, scientists assessed a meteorite from Mars that was found within the Miller Vary of mountains in Antarctica in 2003.
This analysis discovered that whereas water might have as soon as formed the rock contained in the meteorite, it doubtless didn’t help any types of life.
Researchers, together with these from Lund College in Sweden, discovered minerals throughout the meteorite doubtless altered by liquid water in remoted patches – a sample indicating the water doubtless got here from ice buried throughout the rock itself and never from a hydrothermal system.
The examine suggests the martian crust sampled by the meteorite “couldn’t have supplied liveable environments that would harbor any life on Mars throughout the Amazonian.”
Nevertheless, scientists stated these findings utilized solely to this part of the Crimson Planet the place the meteorite rock might have originated from, and to not Mars as an entire.