A low-asteroid impact phase might have been fortuitous to water.
Scientists have long hypothesized that, with liquid water flowing on its surface for more than a billion years,, continents, and a dense atmosphere. And new data and observations are uncovering more about its fascinating past while also raising new questions about the tantalizing possibility of life on Mars.
Now, based on data gathered during China's Tianwen-1 mission, scientists have discovered evidence that a large impact basin on Mars hosted liquid water during the Amazonian epoch,The latest discovery adds to a growing body of evidence that suggests liquid water activity on Mars may have existed for far longer than we previously thought.
Zhurong has investigated several geologic features and returned images and panoramas of its numerous adventures, covering a total of 5,000 feet as of February 4,Even though scientists' long-held belief that ancient Mars was wet and habitable, the planet’s most recent geologic epoch, the Amazonian, began, and is generally believed to have cold and dry conditions.
The study was conducted by a team of researchers, Yang Liu and colleagues, which used data from the Zhurong rover on the sedimentary and mineral properties of southern Utopia Planitia, the biggest recorded impact basin in Mars' northern lowlands. The data was collected using Zhurong's laser-induced breakdown spectrometer, telescopic microimaging camera, and SWIR spectrometer, which measures the mineralogy of the Martian surface from 1.6 to 7 meters away.
The researchers discovered bright-toned rocks that they interpreted as a layer of “duricrust” that would have been formed by the activities of a significant volume of liquid water, which might have been rising groundwater or melting underlying ice.With its current low air pressure and temperature, pure liquid water cannot exist in a stable state on the surface of Mars, save at the lowest elevations for a few hours.
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