Perseverance’s Rock Samples Trace That Mars Had Lengthy-Lasting Historical Water

NASA’s Perseverance Mars rover has now collected two rock samples, with indicators that they have been in touch with water for an extended time period boosting the case for historic life on the Crimson Planet.


“It appears to be like like our first rocks reveal a doubtlessly liveable sustained atmosphere,” said Ken Farley, mission scientist for the mission, in a press release Friday. “It is a large deal that the water was there for a very long time.”

The six-wheeled robotic collected its first pattern, dubbed “Montdenier” on September 6, and its second, “Montagnac” from the identical rock on September 8.

Each samples, barely wider than a pencil in diameter and about six centimeters lengthy, at the moment are saved in sealed tubes within the rover’s inside.

A primary try at accumulating a pattern in early August failed after the rock proved too crumbly to resist Perseverance’s drill.

The rover has been working in a area often known as the Jezero Crater, simply north of the equator and residential to a lake 3.5 billion years in the past, when situations on Mars have been a lot hotter and wetter than immediately.

The rock that offered the primary samples was discovered to be basaltic in composition and sure the product of lava flows.

Volcanic rocks comprise crystalline minerals which are useful in radiometric relationship. 

This in flip may assist scientists construct up an image of the world’s geological historical past, reminiscent of when the crater shaped, when the lake appeared and disappeared, and the way local weather modified over time.


“An attention-grabbing factor about these rocks as effectively is that they present indicators for sustained interplay with groundwater,” NASA geologist Katie Stack Morgan advised a press convention.  

The scientists already knew the crater was residence to a lake, however could not rule out the chance that it had been a “flash within the pan” with floodwaters filling up the crater for as little as 50 years.

Now they’re extra sure groundwater was current for for much longer.

“If these rocks skilled water for lengthy durations of time, there could also be liveable niches inside these rocks that would have supported historic microbial life,” added Stack Morgan.

The salt minerals within the rock cores might have trapped tiny bubbles of historic Martian water. 

“Salts are nice minerals for preserving indicators of historic life right here on Earth, and we count on the identical could also be true for rocks on Mars,” added Stack Morgan.

NASA is hoping to return the samples to Earth for in-depth lab evaluation in a joint mission with the European House Company someday within the 2030s.

© Agence France-Presse


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