ฝัง
- เผยแพร่เมื่อ 27 พ.ค. 2024
- Episode 131
In the very place it might be reasonable to expect, Perseverance discovered circular rock structures resembling ones formed by microbial communities in some lakes on Earth. This exciting possibility called for a closer look.
sschmaus.github.io/links/
sketchfab.com/Mastcam-Z/models - วิทยาศาสตร์และเทคโนโลยี
Thanks!
So happy to have your regular support. Feels like I'm doing something right!
The example of a similar geologic structure on earth, along with an explanation for how that structure forms here was nicely done.
Wasn't that just a great show of Mars Guy's knowledge. The devil is in the details.
I'm just waiting now, for the 'Suck up the simple minds for money ' YT postings, that will have 'click-bait' pictures and words saying something like "Evidence of corner of a building found on Mars", as that's the way of You Tube, right? They don't care how they get money, they will let scams proliferate, so they get the clicks for the ad's. And most of the ad's they post are scams as well. No accountability. No wonder there are 'lost souls' in the world today.
That’s because this is all filmed in a studio in Arizona 😂
@@firstnlast Now, don't you start. 😄
@firstnlast like anyone would waste money just to lie. Plus the Arizona has plants and grey rocks not brown rocks.
Mars Guy has become a superb story-teller. Here he sets up a popularly hoped-for explanation supporting past life on Mars, but then methodically demonstrates how scientists have to follow the facts not their hopes. Well done!
Thanks. This really was the path that I followed, so a true story!
Wow, that's a really exciting episode. (They are all wonderful.) I feel really privileged having you, a geologist, examine and interpret for us the formations Perseverance is finding. Amateurs like me, or unqualified science journalists might easily get carried away with sensational reporting of such finds. Like many, I am familiar with the stromatolite phenomenon, but you have introduced me/us to the broader concept of microbialites. (I put that word straight into Wikipedia.) This whole process on Mars seems to me to be akin to the thrills of discovery experienced by early naturalists and geologists of the 18th and 19th centuries on visiting Australia, Galapagos, and remote South America. What is around the next corner? What indeed. Luckily we have you to guide us. Much thanks.
Indeed, we (tourists) are lucky to have an excellent geologist guide us on this journey exploring Mars. Learnt many details of geology that I was not aware of being present on Earth.
Thanks for the very kind words. I'm happy to share my expertise and glad there are viewers who are interested.
@@MarsGuy It's highly appreciated.
Great video as always. Thank you sir. I love your blend of excitement and scepticism.
Thanks, that's all for real!
I always appreciate your indepth thoughts and updates on the Mars journey. Thanks Mars Guy!
Thanks for the encouraging words and for supporting this channel. Much appreciated!
Great video, as always. And a great geology lesson as well. And thanks for keeping it real. Every now and then my feed has been inundated with "life found on Mars" garbage. I love your channel for keeping me infomatively skeptical yet optimistically hopeful. 😁
There is a growing group of con artists who hoover the 'simple minded folk' purely to make money and it is very disturbing that this You Tube subsidiary of Google, allows the proliferation of it. There should be accountability I reckon. And those that watch the 'sensational' videos, have no idea what they are allowing to proliferate. No wonder people are confused.
"Informatively skeptical yet optimistically hopeful" is an outcome I hadn't quite anticipated. But I'm pleased by it! Thanks for the comment.
Thank you for making geology so interesting!
Thank you for watching it!
I liked the structure of the video. It gave us an intriguing hypothesis, which at first glance seemed reasonable, but then the evidence took us in another direction. We can hope for a conclusion, but must follow the evidence, wherever it leads, as Dt. John Campbell likes to say. Well done, Mars Guy 😮❤
dave8181: You have given us the perfect definition of science: discover, make hypotheses, test, analyze evidence, throw out those theorems that don't fit, test again, modify theorems, publish.
So nice to have viewers who can appreciate the scientific method. And I'll note that the corestone hypothesis could still be wrong.
Your videos are excellent. Thank you.
Thanks for saying so.
Another fascinating update, thanks! I'm learning a little about geology!
Ahh, my secret plan is working!
I love the continuous application of the scientific method ( perhaps it should be called the sceptic method, but that has somewhat harsh connotations.)
And those Argentinian rocks.....nice to remember that Earth is actually the most interesting of the planets.
Glad you can appreciate the scientific method.
I have never come across such a possible form of rock formation. Another new thing to learn about my own planet oddly brought to my attention through Martian news. Who would have thunk it.
Check out Shark Bay, Australia for more good examples of living stroma
Happy to expose otherworldly features of Earth!
@@MarsGuy And, as always, we are all very appreciative of your dedication to bringing this information to the video-space.
Good show! I always learn something new from your channel. Thank You!
Great, glad you do! Thanks.
I really appreciate being accompanied by an expert guide as I follow the amazing exploration by Perseverance and Ingenuity. This was a really interesting episode. Thanks again Mars Guy.
Happy to serve as guide. Thanks as always for coming along.
Thanks again for keeping us informed on the progress of these rovers Mars Guy. It's become part of my early morning Sunday routine.
Glad you've made my Friday night, all day Saturday, and wee hours of Sunday routine part of your routine!
Fascinating update as usual! Thank you for the geology lesson.
Happy to share!
Thanks Mars Guy! Another very interesting week on the planet of Mars.
👍💪✌
Just keeps going and going!
Always fun and interesting, your thinking well backed up with examples. Thx!
Thanks. It's still just a working hypothesis.
Thanks for all the effort you put in! Love the videos!
Thanks much for supporting this channel. This encourages me to keep up the effort.
Thank You Mars Guy!
3:00 - noooooo this makes more sense. You had me in the first half, not gonna lie.
Ha, they had me going too for a bit!
Thank you, Mars Guy. What an adventure Perseverance is taking us on! I am grateful to have you and your videos to explain and teach as we follow this fantastic journey. It is, for me, the next best thing to actually being there.🙂
I'm grateful for having viewers like you. Exploring Mars is a passion that I'm happy to share and glad that others appreciate.
The true beauty of a factual channel. :)
Thanks for appreciating it!
Excellent episode!
Thanks, glad you think so.
Thank you again for these great videos! I love watching them :]
Glad you do, thanks.
Thanks mate. love it
Great, thanks!
Thank you very much for your videos, always enjoyable. The geologists interpretation is also excellent. You must be very excited to have another planet to virtually study, but also intensely frustrated that you will never get there yourself. I just hope live long enough for a successful sample return and see the results of terrestrial analysis.
Thanks for the comment. And yes, it's an exciting time to study the geology of Mars and I do indeed wish I could go there to do it.
Awesome explanation... I was very intrigued when I saw this video come up in my feed! I am so glad you took time to educate us on similar geology here on Earth that can potentially fully explain these features on Mars. Summing it up with the length of time Perseverance stayed at this feature wrapped up the story pretty well and gave a lot of weight to your explanation. If we found anything like a reef with a strong indication of biological origin, I imagine there would be lots of studies and at least one, if not two, core samples. Ultimately, we might just have to put Mars Guy on a DRACO-powered rocket with a few other minds to find the answers for us in a decade. Put in your application and start training!
Ha, I'd go if I could! Thanks for the comment. Glad you appreciated my effort to interpret these features.
very interesting.. Thanks Mars Guy!
Thanks again for watching.
Only a matter of time till Percy & Ginny hit the jackpot, excellent episode Mars Guy👩🚀
We can hope! And thanks again.
Awesome video! Thank you!
Okay. Sufficiently explained about the stromatolite-like formations being natural with nothing much of interest. Where does Perserverance go now? It's a very rocky traverse through the Jezero stream bed. What's the plan? Edit: Really love these weekly updates and Mars Guy does a great job!
Going down the river bed, according to the Perseverance updates
Follow the helicopter
It seems there's a place named Jurabi Point, to the north, 1km. aprox.
Wonderful as always. I loved the line, "It backed away and drove off to explore other features of Martian carbonate terrain, propelled by circular features that were, without a doubt, formed by life."
Glad you got the joke!
Yes, it is true. Maybe olivine cristals. If it is a volcanic structure, we should find similar structures elsewhere in the crater no? There are conviniently placed wheres stromatolites usually are found, so we will have to wait for more data😊
Many thanks for sharing your opinion
Thankyou for that wonderful explanation
Glad you like it. Thanks for watching.
Rite Mars Dude, 3:26 never saw rock formation like that before, Well Cool! TFS, GB :)
Pretty stunning, huh?! TFW, MG ;)
Great explanation...made clear for us non geologist types. It wouldn't surprise me if life once existed in Mars, or even if it still does, but you have to look at it from as many angles as you can.
Glad you appreciated this. If Mars had/has life, it's not easy to find.
Many carbonate geologists, myself included, consider it possible, if not probable, that both rovers have encountered features likely produced by microbial activity. Sheet-like "algal mats" have been photographed by Curiosity. These microbialite-like structures seen by Perseverance seem to occur in just the right place in terms of paleoenvironment hinting at a biological origin. About 5-6km south of Perseverance's current location there is a cluster roughly circular, vertical mounds seemingly completely isolated from the sediments of the Jezero Delta. That's just the kind of place biohermal mounds might build up to significant size during times when the lake was full or filling
These are olivine-rich rocks altered by carbonate, so not like limestone or tufa.
Life or not, the geology of Mars is never boring.
The volcanic structure hypothesys does not hold in an area where you have carbonates or sandstones. Theres is no sign of difference in color or grain size in this circular structures, so they must have sedimentary or biological signature. Do you know what the abrasion tool showed?
Carbonates can form in any kind of rock as a secondary mineral via weathering. Here's a link to an image of the abrasion spot. mars.nasa.gov/mars2020-raw-images/pub/ods/surface/sol/00920/ids/edr/browse/shrlc/SIF_0920_0748624636_312EBY_N0450000SRLC00451_0000LMJ01.png
Thanks. By looking at the abrasion tool results, i would say it is possibly a sedimentary structure, as it is relatively homogeneous. What is your opinion?
@@joaocarvalho7866 I see a lot of angular grains. This texture looks similar to that of the rocks on the crater floor that the rover team determined were igneous.
on our university in Prague, during public lecture about mars, the lector insist to: each one of us have a duty to teach at least one american to pronounce the Jezero correctly. Well, this is my showtime. It's "yazaroh" and meaning is "a lake." In the several slavs languages. Mission completed. Now the channel will be superaccurate.
Yes, I'm well aware of this pronunciation and used it and the hard "J" pronunciation in earlier episodes. But this grew tiresome, so I've stayed with the version most commonly used by the Mars scientific community.
@@MarsGuy Sure. I agree. There must be a safe way to create common mistakes. One of them is respect to the majority agreement. I will turn some another guy to complete the mission. Thank you for the answer.
Interesting and thanks. Don't think that I've seen structures such as those.
They are strange, huh.
Awesome video man!!!
Lots of science packed in this episode!
Are you a Geologist doing research yourself ?
Super Cool video!
Thanks man!
Thanks! Yes indeed, I am a geologist. Check out my About page.
Good catch
Thank you.
You're welcome.
Nice job.
Thanks!
Stromatolites for the win! Thank them for all the early earth’s oxygen. I recall an article on fossil microbial mats and how’d might look on Mars. An “expert” said she recognized fossil mats in Mars photos. Bold claim. We’ll see.
I understand there are canals, too.
nasa has been photophoping pictues since we have been sending rovers to mars
Your family is a hologram
Really interesting stuff
Thank you Mars Guy.
Thanks again for watching.
Thanks, MG.
You're welcome.
Question for Mars Guy. Tomorrow I see Robert Hogg if JPL in a talk. “ROBERT HOGG is a Senior Engineer at NASA's Jet Propulsion Lab in
Pasadena, California. He is the Mission Manager for the Mars 2020
project, which operates the Perseverance rover and accompanying
Ingenuity helicopter, both of which are currently exploring Mars.”
Anything you or anyone want me to ask??
I understand exactly where you're coming from but they are very interesting pity we can't get a core side sample cut and see layers
MARS GUY!🎉
Does anyone know if the type of microbes that form stromatolites on Earth could survive a trip to Mars on some kind of impact ejecta, or vice versa?
Great explanation, complete with the Earth examples of core stones. Did they announce what they found on the first outcrop where they took the sample? Is it volcanic?
Thanks. Haven't heard/read any results from the latest sampling effort.
Woah it really does look like the examples you showed. That may even be more interesting than finding actual life there.
Imagine if we could have that pristine lifeless planet to study how a planet evolves without life. It would be the control group of the human experiment.
So far, our planet's life keeps life on the planet, but if that changes at any time, Earth will be the new Mars in the blink of an eye.
We still haven't proven that Mars is lifeless, but I agree that a truly lifeless planet would make an interesting comparison to the life filled Earth.
And today’s episode is geology 101, maybe not the most exciting episode, but it’s still another intriguing insight into our exploration of Mars, backed up with knowledge learned here on Earth. 👍🏻😎
Ha, well, hopefully you still enjoyed the class!
So, It's a case of close, but no cigar. Besides, a stromatolite-type formation on the surface would be unconsolidated and would have weathered away long ago. Well, no one claimed the search for past life would be easy.
Definitely no cigars on Mars!
You sir, make such great content! When i make my own money, and can afford to spare some. You will be the first to receive my donation.
Thanks for saying so! I appreciate the comment.
It does look like the remains of a fireplace in the corner of a room. Probably not.
What ever happened to Curiosity? Is it still operating? Keep going Persy.
Still going after 11 years.
Imagine human life got wiped out, then in a few million years we're replaced by another species just as intelligent as us that send space craft to Mars. Id love to see how confused they'd be over all these drill samples, like these perfect holes can't form in any natural process thats known, yet they keep finding them on Mars. What a mystery!
In a few million years, there'd be no sign of those holes. They'd have weathered away.
Quite clearly it's the remains of the Starship Voyager.
I've heard about stromatolites for a long time, what they are, I don't know, which cartoon character said "It's possible" x
Good episode Mars Guy. I will continue studying microbialites.
Could they be tongues of mud, which have been followed by other streams of finer sediments, first filling in the rounded shapes, and then literally "cutting" the semi-dry fill of other streams?
Perhaps RIMFAX can give the thickness of those rounded or linear shapes and provide interesting data. I know, I'm always late! They've already done it, right? :)
Assuming that the nearby slab that was abraded is the same as the slabs with circular features, then no, the texture definitely is not that of mud.
Somebody at NASA says, “Any ideas what this is?”. Somebody in the group says, “ Let’s get on TH-cam and see what Mars Guy thinks”.
Said no one in the history of NASA! But thanks.
One of these days, they will find it. I hope I'm still arrond.
Great episode! This is what we came to Jezero crater for! Shame they didn't feel the need for a sample.
I get the feeling that between Perseverance getting closer to the ancient beach and JWST detecting methane on the Hycean planet K2-18b, there's an above 25% chance that we will have detected the first evidence for life outside of the earth.
While in the next 20 years we'll be able to throw in the Dragonfly Titan mission, Mars Sample Return, Europa Clipper/Lander, LUVOIR-A/Carl Sagan/HabEx telescope missions giving us I think an above 50/50 chance of detecting evidence of life or past life outside of our planet before 2050!
That's pretty optimistic in my view. I am hoping the Europa mission gives the scientists a good look into it's depths. If they find life there, that supports some views that "where there is water, there will be life".
My view is that Earth is a statistical freak of the universe. Somehow we struck the Galaxy Lotto Powerball and extremites were created in the frozen ice, that covered the planet in the very early formation. The more that we find, the bigger the questions, it seems. Great to be alive to see it all happening though.
@@David-yo5ws You may be right about the "Galaxy Lotto Powerball" first prize, but remember, there are many smaller prizes in that lottery. I believe simple life is far more common than we might think but technologically intelligent life much, much, rarer than we might think.
@@chrisantoniou4366 Excellent analogy of my Lotto odds. Now, I had not thought about the many smaller prizes and bonuses. But that works well for me. Thanks, I will be using that as an example for future conversations. Sadly, only online, as none of my friends have any interest in space exploration or search for life beyond Earth. I gotta get new friends. 😁👍🏼
I'd have gone with "Wheres the Reef" ;D
Ha, good one!
Mars Guy - Great video and yes, I immediately got the created by life "tire joke," well done.
I'm curious if you have an opinion on Gilbert V. Levin,the 'experimenter' of the LR on the Viking mission(s) and his statements regarding organisms on mars?
He seems to present evidence in a paper in Scientific American, that simply based on odds, both Viking landers did find microbial life. He mentions many different things to support his point including stromatolites, which he said have only a 0.04 likelihood of being caused by chance. Of course, you cited an analogous terrestrial process which is NOT chance, and which Dr. Levin seems to have overlooked.
But - my question is, do the sum total of all the factors Mr. Levin cites, as well as the more plentiful water on mars than "even 10K ago," suggest to you approximate odds for life? If a colleague at NASA said "you can never eat pizza for lunch again Mars guy unless you give odds," what would you put the odds of microbrial life today, at?
We lay-people are of course, curious about the bottom line. Even as scientists probably are not!
I think life may have been present in early Mars history, but I'm very skeptical that it could live in the top few cm's of soil today. It's so dry and so cold, I don't see how it's possible. But maybe if life got started early, it evolved to survive at much greater depth.
Hey Mars Guy, I hope NASA will enlist you when the time comes for a manned Mars mission. I can see you having field days--pun intended, just exploring all the wondrous geology Mars has to offer.
Ha, thanks. But I'll be too old when the time comes.
Brilliant. Thanks very much for your quality and objective professional analysis. But I'm surprised there was no sampling for organic testing. At least have a looksee.
I've spent more than a few hours scanning mars pics for these. Mars is such an enigma with all its methane and perchlorates and NASA too chickensht to look for actual ... oh nevermind
@@2nostromo You would think they would go into the deep valley's, which are closer to the Mars core and more likely to have warmer temperatures. But the mind of a scientist, does not think like the mind of a couch potato engineer. Exciting to be retiring and having all the spare time to watch it all. And share with all sorts of people around the world, with different points of view, knowledge and perspective.
@@David-yo5ws Yes I take your point. Mine is that spending all that effort to NOT test for life since the Vikings (which probably did indeed detect it) is beyond strange. By now we should be on to Beagle 10+. Sometimes the people I manage try to pick "low hanging fruit". NASA is aiming so low they practically guarantee there will be no failures. NASA needs better managment. I am available but I don't think they can afford me.
@@2nostromo I think there are a lot of people in NASA that like to see exploration, but it takes a very special individual that actually goes out and explores. Maybe SpaceX's Starship System will be the new Beagle to cast off and sail to new lands? Nice talking to you. Kiwi David.
@@2nostromo NASA's lack of real testing for biological activity is hard to understand, especially after the Vikings. "Too chickenshit" is being polite!
2:57 Earth Guy for scale
True! (just not me)
Its seem like shoeprint of an alion 🎉
At 2:56, is that Mars Guy for scale?
Ha, no. Probably the author of the paper that I cited.
Maybe he is “a” @@MarsGuy
MARS GUY FOR PRESIDENT (of mars)
Ha!
I think scientists need to look outside the box when it comes to Mars.
We literally live INSIDE the "box" and "mars" is merely a light in the ceiling.
cool
You said it!! You have to “imagine” water. You are wrong.
What you do mean on your last sentence? "Without a doubt, form by life."
Are we about to find life on Mars?
He's not going to explain this, but he really should!
It was a humorous reference to the wheels: "It backed away and drove off to explore other features of the margin carbonate terrain, propelled by circular features that were, without a doubt, formed by life."
Thanks for explaining! Know that there is no other like you. You're on a mission to help everyone understand. Even NASA won't do what you do. For this, God Speed!@@MarsGuy
🤯
So, what you're saying is that there are 'joints' on Mars. You may have just single-handedly increased the number of potential colonists by thousands! Joking aside, great video!
Ha, I figured someone would make that joke!
On earth this sedimentation epoch was known as the Triassic was it not, the weathering of basement volcanics and igneous rocks deposited during the Cambrian period, obviously Mars would have undergone the same geological processes, this depositing quartz rich sediments in it alluvial valleys and deep basins, this explains the concept of alluvial fans, and deltaic facies present...
However, during earths Devonian and Silurian, Ordovician, marine life existed in the oceans, I e graptolites, trilobite, ammonite and other organisms...
Looks like Mars was destroyed by some sort of climatic dilemma...
Reducing it to a desert planet a long time ago before life could flourish..
Makes a great Arakis though..
It’s obvious a UFO in a parking spot
Devon Island.
Your mother is Devon Island
this could be just Devon island canada
OR it could be Mars!
...again no obvious sign of former life on Mars😟
Yes! Microbial Induced Sedimentary Structures.
Probably not. Mars Guy provided a more likely other probable cause in this video.
The last work you spoke in this episode did not come through very well. Was it 'light' or 'life' or something else? CC does not help, as it leaves the last word out completely.
Thanks!
I was making a humorous reference to the rover's wheels being circular features that no doubt were formed by life (humans on Earth).
4 minutes 5 seconds, can you explain what looks like a perfect square in the lower right corner, it's quite unusual.
I think I see what you're questioning, but what I see is a triangle shaped stone/object if you look closer! It is kind of unusual just sitting there all by itself, but prob not uncommon?! Just imagine what else Percy would find if it could go over rougher terrain! Thanks for pointing that out, it's fun to see those little things!!
Yes, I see a triangular-shaped rock (a right triangle).
Hold up, I'm nt onto biology terminology, but in so many Words, did he say formations, (more then likeky) WERE formed by LIFE?
Just asking.
No, they look like the result of spheroidal weathering.
@@MarsGuy Thanks, just wanted to bê clear.👍🏿🥂
whats the deal with Curiosity why dose no one ever talk about it
99.9 % imagination & the pictures are likely real w/ out using a green screen which hid the godzilla eggs
You're something else
So, in plain reality you are an earth-guy. Fascinating.
I live on Earth but work on Mars!
Is it possible that early life from Mars was brought to Earth by a meteorite?
oh yes and vice/versa 🛸
Definitely not signs of intelligent life. Round peg in square hole. 😁
My thought, is that much like how a _Roomba_ can get stuck in one spot, Mars' _Dirt Devil_ can as well, and this is just the erosion caused by it... 😏
_(play on words; Dirt Devil was a brand of vacuum cleaners, albeit manually powered, not automated like a Roomba lol)_
I still don't understand why no search for life experiments have been sent to Mars since the Viking landers. Rather than a very expensive and risky sample return mission wouldn't it have been easier and cheaper to just put experiments on Perseverance and have this question resolved in situ ?. Thanks Mars guy.
They need massive machines to analyse this stuff. You can't put that on Mars.
@@tbird81 They put search for life experiments on the Viking landers in the 70' s so I can't see it being to much of a problem now considering all our modern tech and the fact that Perseverance is a very sophisticated mobile science lab.
IF they did the analysis on Mars and found proof of life, I could see a lot of disbelief . By returning the samples, different labs can verify any proof of life
I think you need both. It shouldn't be too difficult to devise some simple tests for detecting life on Mars, and organising a sample return mission to subject the material to a much more thorough analysis back on Earth. Someone had described NASA as "chickenshit" as a reply to this video to describe their reluctance to look for life, but I think he was being polite!...
It's perhaps easy to test for current life. But extremely difficult to test for life that might have been there millions of years prior to the planet drying out and freezing.
Look at what they're doing with the asteroid samples. You can't test that without whole buildings.
3:26 I am by far no pro, but i got scammed many times by amphibolite throwcatites, into thinking i found petrified wood. So it is pretty possible that you are right.
I take my bets on aquifers😎 If life isn't there, it probably never formed. But where are all the tholins then🤗