David Bridges
Water exists on Mars, in line with a group of geophysicists, and never simply as ice on its poles or as vapor in its environment. The scientists have discovered proof of liquid water deep in its outer crust, based mostly on their evaluation of knowledge offered by NASA’s Mars Perception Lander. Particularly, they analyzed 4 years’ price of floor motions recorded by the lander’s seismometer. By taking a look at seismic velocities, or how briskly seismic waves journey on the planet, they have been capable of decide the supplies that the waves moved via. What they discovered was that Mars’ mid-crust has fractured igneous rocks saturated with liquid water.
One of many scientists concerned within the examine, Prof Michael Manga from the College of California, Berkeley, informed the BBC that they carried out the identical methods used “to prospect for water on Earth, or to search for oil and gasoline.” He mentioned his group’s findings can reply the query of the place all of the water on Mars had gone, as a result of options on the planet’s floor confirmed that it had lakes and rivers round three billion years in the past. Whereas there is a idea that the majority of that water was misplaced to area, scientists have challenged that concept in recent times. One examine by Caltech and NASA JPL printed in 2021 discovered knowledge that the majority of that water continues to be trapped within the planet’s crust.
The scientists concerned on this newer examine, printed in PNAS, have been solely capable of analyze seismic velocity knowledge taken from beneath the lander. Nonetheless, they consider that comparable underground water reservoirs exist everywhere in the planet, they usually estimate that there is sufficient liquid water beneath the floor to type a layer throughout Mars that is half a mile deep. Manga informed the the BBC that “a lot of our water is underground and there is not any motive for that to not be the case on Mars too.”
Whereas the group’s findings could possibly be taken as excellent news for area businesses and personal firms seeking to go to and even type human colonies on the planet, it will not be simple reaching Mars’ water reservoirs. They’re situated round 7 to 12.5 miles under the floor, which will not be simple to succeed in even on our planet. “Drilling a gap 10km (6 miles) deep on Mars — even for [Elon] Musk — can be tough,” Manga mentioned, including that “with out liquid water, you do not have life.”
Daniel Mercer
