Science
Related: About this forumCuriosity rover discovers that evidence of past life on Mars may have been erased
By Ben Turner - Staff Writer 8 days ago
The HiRISE camera aboard NASA's Mars Reconnaissance Orbiter captured this photo of the
Curiosity rover on April 18, 2021. (Image credit: NASA/JPL-Caltech/UArizona)
Evidence of ancient life may have been scrubbed from parts of Mars, a new NASA study has found.
The space agency's Curiosity rover made the surprising discovery while investigating clay-rich sedimentary rocks around its landing site in Gale Crater, a former lake that was made when an asteroid struck the Red Planet roughly 3.6 billion years ago.
Clay is a good signpost towards evidence of life because it's usually created when rocky minerals weather away and rot after contact with water a key ingredient for life. It is also an excellent material for storing microbial fossils.
But when Curiosity took two samples of ancient mudstone, a sedimentary rock containing clay, from patches of the dried-out lake bed, dated to the same time and place (3.5 billion years ago and just 400m apart), researchers found that one patch contained only half the expected amount of clay minerals. Instead, that patch held a greater quantity of iron oxides, the compounds that give Mars its rusty hue.
More:
https://www.livescience.com/mars-life-evidence-erased.html?utm_source=notification
Wounded Bear
(58,654 posts)Effete Snob
(8,387 posts)And, if so, does this mean they moved somewhere else?
Ancient astronaut theorists say yes!
You have to ask yourself, why would the evidence have been erased, and who erased it?
The evidence from NASA definitely indicates with 100% certainty that it could have possibly been the aliens themselves.
Wounded Bear
(58,654 posts)It cracks me up that the "History Channel" plays a marathon of those guys every Friday.
Yeah, that stuff is real history.
Effete Snob
(8,387 posts)Every time the Amcient Astronaut Theorists say yes you have to take a drink.
Ancient astronaut theorist say yes and some of them even go further to ask can I smoke some of that?
Wounded Bear
(58,654 posts)and yes, that means I drink a lot less, like in not at all. Drinking games not my gig.
Effete Snob
(8,387 posts)Wounded Bear
(58,654 posts)not to mention my weight problem.
You're not helping here.
Effete Snob
(8,387 posts)Gluten-free communion wafer?
ret5hd
(20,491 posts)Effete Snob
(8,387 posts)Although I think we recently increased tariffs on all farm products from Magnesia.
Wounded Bear
(58,654 posts)exboyfil
(17,863 posts)Hiding evidence of aliens.
Midnightwalk
(3,131 posts)So of course he erased all evidence with his dis integrator gun
Wounded Bear
(58,654 posts)Warpy
(111,257 posts)Microbes have been detected deep underground in glacial lakes under half a mile of ice. That suggests that there might still be microbial life on Mars, but we're going to have to work hard to find it. The Martian biosphere might be only a few meters thick and under a mile or so of rock.
I would be more surprised if they don't find anything, honestly, lift tends to evolve into whatever environment it can exploit.
NewHendoLib
(60,014 posts)Sneederbunk
(14,290 posts)Worried2020
(444 posts).
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