How Scientists Proved These Rocks Came From Mars.

[@OlleErikssonL]

The amount of information and fields of science you manage to understand and then summarize for the rest of us is staggering. You are a one of a kind!

[@sayyamzahid7312]

Melbourne Australia deport deceased tooba shehryar

[@raydunakin]

Thanks for this -- I've often wondered how they could determine the origin of Mars meteorites.

[@MegaBanne]

Yeah. As a kid I use to think like "I bet they know because they are red just like mars" lol.

[@julianemery718]

@@MegaBanne I mean, at the very least that's a reasonable guess.

[@nickhewett8815]

Ditto. I wasn't sure that such claims weren't myth but thanks for clearing it up nicely Scott. Totally puzzled by the fact that there are down-votes against the article. Perhaps by people that remain unconvinced.

[@rockets4kids]

@@nickhewett8815 Particularly since Scott was rather clear that we cannot confirm this until completion of a sample/return mission.

[@psychohist]

@@nickhewett8815 Downvote rates of less than 1% are pretty good. There will always be a few downvotes because KZbin recommended the video to someone that wasn't interested, etc.

[@henrysalayne]

Could there be Earth meteorites on other bodies? That could be quite interesting. It could show how well organic material is preserved.

[@cluelesskhajiit]

With how hard, and often the Earth was pummeled in its early life, I wouldn't be surprised of parts of it made it to other planets, or are even zooming around waiting for a curious species to study it.

[@kdarkwynde]

Absolutely. My understanding is it's more likely for Mars rocks to hit Earth than the other way around (Mara is "uphill" from Earth), but it's definitely a possibility.

[@jeremygalloway1348]

I don't think there's much question about this. I mean regardless of what orbits where(other than the obvious impacts shearing off chunks and flinging into space)...it makes more sense that there would be pieces of earth injected into other heavenly bodies...except for the sun due to vaporizing. If the moon was really created in the way that is commonly accepted...then the earth and the moon are made(formed) from the same material. If that event happened...then I can't see how some mass couldn't have been flung out in all directions and impacting or at least aimed to impact every other major body in the solar system...except jupiter or maybe Saturn. But then again if jupiter has played such a vital role in allowing life to be formed here on earth due to gravity protection...maybe that prevented this from happening. Good question and great mind exercise! Very interesting stuff!

[@Dragrath1]

@@jeremygalloway1348 I'm not sure what amount of intact meteorites the Theia impact would have produced since the newer models indicate the impact was likely much more direct resulting in the proto Earth's crust and much of it's mantle were likely vaporized as the Earth Theia impact remnant body would have been a disk of rock vapor rotating too quickly to coalesce into a single oblate spheroid body labeled a synestia. Of course it also seems that possibly at least 1 to 3 major chunks to Theia may have survived one of which likely seeded the precipitation of the Moon and if they are Theia remnants the other two could potentially be the origin of all or most of the low shear velocity anomalies found at Earth's core mantle boundary. The latter idea is still controversial with the other theory for their origin suggesting they are instead seafloor slab graveyards however both models have some evidence in favor of them the argument for Theia is supported by the amount of material matching the amount of material from Theia that had been unaccounted for and there is evidence for downwelling seafloor slabs sinking at about 10 cm a year and are recognizable as sunken seafloor crust dating back to the Jurassic. That said the low shear velocity anomalies are down far enough that we don't have as good of resolution via seismic tomography down there as we do for the sinking slabs from the Jurassic and Cretaceous. Now the hypothesis that Jupiter protects Earth from impacts has long been assumed to be true but computational models find it doesn't really hold weight as while Jupiter does prevent some comets which would otherwise hit the Earth from hitting the Earth it more than compensates that benefit by sending asteroids towards the Earth ultimately increasing the odds of an impact rather than reducing them. Of course without Jupiter flinging material into the inner solar system Earth might not have been the habitable world we know. As for impacts on planets Jupiter and Saturn are hit by impacts they just don't leave long lasting craters though the atmospheric scars can be surprisingly long lasting given the sheer scale of those planets. Calisto however does carry a long crater record so might be a good place to look. The other moons particularly Io and Europa have been geologically resurfaced much too frequently for anything to survive especially in the case of Io which has no craters just calderas from the extreme constant volcanic activity and vast mountain ranges from the continuous mountain building.

[@henrysalayne]

I was aiming more for mass extinction events linked to asteroid impacts. There is probably a limit of the energy transfered to the ejected material (above which it will just evaporate). Ejecta from celestial bodies above a certain mass and with a certain atmosphere thickness might not be able to leave the gravity well of the body. That is probably the reason there haven't been any Venus meteorites yet. The question is: could there be Earth meteorites on the Moon, maybe from an impact 33 million or 66 million years ago or is Earth's gravity and atmosphere too much of a hindrance for material to escape?

[@Nivailo]

He's so excited about this particular subject, it made me excited about this particular subject, even though I'm half asleep now. Small atmospheric gas bubbles inside molten rocks crust? Duuuuuude *exploding head gif*

[@redion8575]

Uh

[@zerg9523]

Hmmmm… Would that mean we could potentially extract samples of martian air from the pockets?

[@patreekotime4578]

@@zerg9523 just watch the video.

[@RalphEllis]

The famous meteorite was the elagabal-omphalos, which became central to many religions. It was the omphalos of Delphi in Greece. It went to Persia in the 3rd century BC Then it cam back to Syria and was known as the elagabal (mountain of god). Where it was always embossed with the Phoenix - the fiery bird from space. Then Emperor Elagabalus took it to Rome. The religion it created became Sol Invictus, but the meteorite itself went missing. The Knights Templar claimed to have discovered it, and called it the Holy Grail. But the rock itself is still missing. Although Scottish Templars still claim they have it. It was wondrous and venerated, because it was highly magnetic. Which made it very exotic. R

[@gregsworldkitchen6764]

BSc Geology here. Very well explained, especially the dating (U/Pb decay). Well done sir. Mars is fascinating and I think they should send a rover mission to one of those origin craters for confirmation.

[@SteveKasian]

"Confirmation?" What do you mean, confirmation? "Scientists" already know definitively - What good would "confirmation" do science? They know all! They can do no wrong, or publish no wrong! Listen to yourselves, people. Use common sense. If something must be confirmed to be true, it is merely a hypothesis to begin with! Which invalidates all of this so-called "scientific consensus" that some specific meteorites are actually "pieces of Mars."

[@allenkemp3124]

“A CIA agent in the 1960’s charged with faking the moon landings” 😂😂😂

[@Charonupthekuiper]

Brilliant science all round, the Viking probes amaze me because landing on Mars is a nightmare.

[@MikinessAnalog]

That thin atmosphere & lower gravity REALLY changes the maths. Can't really "air brake", that much I know.

[@coenogo]

@@MikinessAnalog If all else fails. you can always resort to lithobraking, like the Mars Climate Orbiter!

[@MikinessAnalog]

@@coenogo I know, jus sayn air braking isn't really a significant way to slow down there. That retro rocket lowering an apparatus was genius, because it flies away after to crash elsewhere.

[@AudioArcturia]

@@coenogo I see what you did there xD

[@MattMcIrvin]

@@MikinessAnalog You use a big, BIG parachute for part of the descent, but the last bit is a challenge. You can do some kind of rocket landing, with or without a skycrane, or the kind of bouncy-airbag approach that Pathfinder, Spirit and Opportunity used (and Beagle 2--I guess that part at least worked).

[@alecearnshaw9651]

Great video Scott! Finally understood how they know these things are from Mars! BTW, at 4:30 the graph shows the proportion of Iron to Manganese (Mn), rather than to Magnesium.

[@hj-redravenheng3822]

Good explanation for the layperson Scott! As a geologist myself I've always wondered how the isotopic analysis and dating worked with these samples. I'm sure we'll find more and progress the science further in future.

[@rickkwitkoski1976]

Thanks. Tell that to the numpties commenting here...

[@christopherdaffron8115]

Yes when I learned that we have rocks from Mars here on earth , I most definitely wondered HOW that was known!!! I saw your video and immediately clicked on it to find out. Many Thanks!!

[@sayyamzahid7312]

Melbourne Australia deport deceased tooba shehryar

[@MikinessAnalog]

Discovering the dates Martian craters were created (with margin of error), then aligning those estimates with known Martian meteorites then allowing for interplanetary drift time ... awesome logic. Of course if Earth can be hit, so can Mars. I wonder if Mars has any Earth meteorites?

[@KevinLyda]

Yes. This was my question. Might we find bits of the Yucatan on Mars?

[@peterjames808]

Imagine sending a rover all the way to Mars only to accidentally sample a bit of an earth meteorite.

[@Candesce]

@@peterjames808 imagine sending a rover to Mars and discovering fossils that just were ejected from Earth. Or perhaps it's the other way around :)

[@AldorEricsson]

Theoretically possible but pretty unlikely. Earth has much deeper gravity well and much much denser atmosphere.

[@MikinessAnalog]

@@AldorEricsson Plus another variable to look at: Most of the solar systems mass is on the "Venus side" of Earth & to have a projectile from Earth go to Mars would take some serious speed.

[@gg3369]

I thought you would talk about the core that Perseverance successfully grabbed this morning. Have you done a video on the MSR mission and all it's phases.

[@joshuacheung6518]

Probably got recorded yesterday or earlier

[@bbgun061]

We’re pretty sure that core sample is from mars. /s

[@RalphEllis]

The famous meteorite was the elagabal-omphalos, which became central to many religions. It was the omphalos of Delphi in Greece. It went to Persia in the 3rd century BC Then it cam back to Syria and was known as the elagabal (mountain of god). Where it was always embossed with the Phoenix - the fiery bird from space. Then Emperor Elagabalus took it to Rome. The religion it created became Sol Invictus, but the meteorite itself went missing. The Knights Templar claimed to have discovered it, and called it the Holy Grail. But the rock itself is still missing. Although Scottish Templars still claim they have it. It was wondrous and venerated, because it was highly magnetic. Which made it very exotic. R

[@Keithustus]

*its phases Stop apostrophe abuse today.

[@forloop7713]

@@Keithustus this rule is kinda ambiguous

[@decivillain9216]

In Simple Rockets 2, someone has made a planet called Scott Munley.

[@uranus9954]

Yes Yes and YES!

[@linecraftman3907]

They just ported my ksp mod to sr2 :)

[@ananttiwari1337]

hahahahahhaha i remember that

[@freakshow1997]

nice one. Mn is not magnesium though, it is manganese. Mg is magnesium.

[@eekee6034]

I thought there was something wrong when he said that. Thanks for the clarification.

[@Christopher-pe6zj]

Can't get enough of these videos from Scott thank you

[@tokk3]

Look at that drone go! Amazing!

[@tx2sturgis]

Man...this channel ROCKS!

[@hotrodandrube9119]

Out of this world.

[@neithere]

Fantastic video. Thank you so much, Scott! Perfect balance between accessible and detailed.

[@FranLab]

Meteorites indeed! I made a video about my very own awesome Moon Rock - sample returned the old fashioned way: kzbin.info/www/bejne/bZ-Zc36va7R7n8k

[@MikinessAnalog]

"Hey, It's Fran ... in the lab ... again" XD

[@Jaqen-HGhar]

Pretty soon Captcha images are gonna be, "Which of these images contain Mars Rocks?" Instead of, "Which of these images contain street signs?"

[@Spedley_2142]

Finding on Earth a piece of rock, probably from Mars is like amazing but in a hundred years when somebody hands you a bucket of Mars rock you'll say thanks and stick it in the garden.

[@Bear-form]

"Probably" Probably not.

[@clayz1]

Let’s hope we don’t seed Mars with OUR microbes.

[@Bear-form]

@@clayz1 Yeah we should. Expand life beyond earth.

[@MushookieMan]

Bringing rock back from Mars (for anything other than science), is the economic equivalent of building a high speed rail system all the way around the Earth to take you from your front porch to your back porch.

[@clayz1]

@@Bear-form My point is that when we do find life on Mars, how do we know for sure it’s part of Mars for eons, and not just something we brought up there recently.

[@CurtisDensmore1]

I've been asking this for decades! Thank you!

[@frankgulla2335]

Thanks, Scott. Great update on the comings and goings of probes and rovers and ejecta that fall to the Earth.

[@Kevin_Patrick001]

I actually collect Zircon crystals. I think its so cool to to have something that is older than the earth and was possibly from another planet.

[@Olysk8er]

A decade from now feels about 4.3 billion years away in this timeline.

[@ExaltedDuck]

How did researchers know? They turned the rocks over and found the "Made in Mars" stickers. ...and through a fortunate twist of luck, those happen to be the very three Martian words we know to translate. Science!

[@joeydr1497]

What is amazing is that the whole mission of curiosity spanning nearly 10 years could be achieved by a human in a day or so

[@nuclearfrog306]

Another great video, Scott. Well done!

[@yan-amar]

Thank you for 4:05 :D And by the way I found this entire video extremely interesting. The subject at the end is so cool too :)

[@lonestar6712]

Devon Island is where NASA simulates the Mars environment for training exercises.

[@yokothespacewhale]

5:00 maybe im just getting old because I barely even am enough to remember such days, but I really miss the old print graphics and illustration style. Recently been enjoying old warhammer and other RPG books and yea, getting those vibes from these old papers and I like it.

[@meteoritemann992]

There’s probably meteorites ejected from earth on the surface of Mars!!

[@cdl0]

In truth, not many because Earth has a much higher escape velocity than Mars. However, it would be rather ironic if Perseverance picked up a sample of one, and it were eventually returned home.

[@alanbrady420]

Personally it wouldn’t surprise me in the slightest if we found ancient microbial life on Mars.. we keep finding things on earth and once we have humans on Mars hopefully we’ll find out a lot more. The next two decades are going to really interesting! Once we have the new technology that takes us there. Great upload one again Scott, thank you.

[@jasonlast7091]

What would surprise your more: Finding it or not finding it?

[@alanbrady420]

@@jasonlast7091 probably not finding it, although it would probably be deep down in the old river beds.

[@alanbrady420]

@Smee Self I can imagine we will definitely step foot on Mars by 2035 if not sooner.

[@alanbrady420]

@Smee Self same here buddy.

[@ГеоргиГеоргиев-с3г]

Well in ten decades those ancient microbacterial life would be eleven decades old... And of earth origin and will have to have won the competition with the more ancient earth microbes from earth from the early earth bombardment or since. Especially if they are like those extremophiles( missquote: "6-8 legged mole bear thingy with cryo-blood") they let outside the ISS to live and thrive in the vacuum of space; panspermia is not that unlikely (especially with a space fairing host rase).

[@walter2990]

"...flying across the duunes..." I just love it!

[@thomasboomer9809]

Thank you. I knew there were methods to determine this, but I really didn't know what they were. This is a great intro to the subject.

[@rainerandkatieniederoest825]

Thank you, Scott! That is the most complete explanation of this and geological dating by radio nucleotide decay that I have encountered. You've sated portions of my skeptic brain.

[@rickkwitkoski1976]

"OH NO! YOU CAN'T USE 'carbon' DATING FOR THAT!" Say the creatards. Just hope one will pop up here...

[@philipkudrna5643]

Another science education masterpiece by our hero Scott! Very insightful! Thank you!

[@Carboxylated]

Love these analysis videos you do. Keep it up Scott! Cheers

[@jgblueskies]

even after all of this scientific research, people will still say "Space is fake"

[@JamesF0790]

Space is- No, No I can't do it. Not even as a joke. Space is awesome.

[@Asterra2]

I'd say the vast majority of people who wait for evidence of life on Mars fail to realize that if/when we do find it, it'll most likely end up having a common ancestor with life on Earth. And it's all because of the very subject matter of this video. The odds of life *not* having spread between the two planets over the billions of available years are absurdly low.

[@EnglishMike]

What little evidence we do have would seem to be at odds with your bold assertion. First life got started pretty soon after Earth cooled down enough to support it (as opposed to the billions of years it took to evolved into multicellular life) and second, we have evidence Mars had relatively similar conditions on its surface in the early days of the Solar System. If life does/did exist on Mars, It's certainly possible life on both planets had a common biological ancestor, but it's no slam dunk. We may be chemical cousins, not biological ones...

[@Asterra2]

@@EnglishMike You're not understanding the epochs involved in these advents. Life took an indeterminate span of time to develop-we can't know with certainty how long because geology prevents it, but there's a margin of error in the hundreds of millions of years. All this during a time period of extremely elevated bombardment, where exchanges between planets were absolutely routine. As I said, avoiding panspermia in such conditions is effectively impossible. And all it takes is a single modestly successful ride for "life to start" on whichever planet it hadn't yet managed. I'm not going to hairsplit over whether having a common ancestor is or isn't "a slam dunk" by a given person's reckoning. I never said "we'd probably turn out to have a common answer, _and_ everyone will be happy with that outcome."

[@dschaedler]

It is just mind boggling, that we went from 'ugah, fire!' to measuring the exact amount of nobel gases found in a crystallized bubble of marsian atmosphere that flew across the solar system...

[@mildmannered1086]

Love this very much, common question that passes in my head so appreciate the condensed video!

[@rickrys2729]

Chemists can do amazing things with tiny amounts of materials. Amazing!

[@jordykoning2803]

Finally Scott Manley has my back! I have a small piece of the NWA-4925 and people keep telling me it's probably fake since there's no way for a Mars rock to reach earth.

[@watsisname]

Congrats! It's so surreal to hold not even a meteorite but a piece of another world in your hand. I have small pieces of NWA-11288 and NWA-11474 (Martian and Lunar). I wonder if someday someone will find a lunar or martian meteorite somewhere besides Africa and Antarctica? Surely they exist everywhere, just very difficult to find.

[@peeperleviathanfan404]

Hey Scott, can you do a video on Cryogenesis? I've always thought about it as a good solution to deal with the time it takes to travel in space. In general, a series of videos debunking or discussing science fiction space travel would be great. Love your videos, btw!

[@hernerweisenberg7052]

1:45 if that golden ring shaped thing there is the core drill bit no wonder the sample was crushed up, that thing looks way to thick :D I bet one of those from the hardware store thats used in construction to drill holes for socket boxes and such into brick would have done better, those only have to cut very little due to their thin blades. That thing in the image looks like something to drill and hammer through meters of concrete.

[@loucifer8009]

If you look very carefully on the bottom of the rock it says...MADE on MARS.

[@bobblum5973]

While Scott was describing all the analysis being done, and even possibly pinning down which impact craters might be the source of specific meteorites, all I could think of was a new TV show: *CSI:MARS*

[@alexrossouw7702]

Lunar origin meteors have high levels of cheese isotopes

[@Sushihunter250]

Thanks for this Scott. I always enjoy your informative videos. You would be the ideal person to do a series of space/science videos for high-school students to be used in the class room.

[@k9g636]

Great video ;) I have a peace of Tissint in my meteorite collection which is very interesting in terms of life on Mars as it was a witness fall and collected shortly after impact.. Other than that its very exciting to actually have a piece of Mars on your hand 😆 Moon rocks are cool but Mars rocks are even cooler 😏

[@meansq]

hopefully decade from now we will have people on mars who can actually run the experiments right there!

[@Q_QQ_Q]

no

[@afakeboxofporkramen5334]

@@Q_QQ_Q you don't want to live on mars

[@Q_QQ_Q]

@JZ's Best Friend its all for free money for corporate . none is going to mars .

[@Q_QQ_Q]

@JZ's Best Friend its now financialization of public assets meaning we are creating anything new but finanializing already existing public wealth aka govt property like NASA etc by creating private industry out of NASA which literally means transfer of public wealth to corporate . though technically anyone is allowed but you know its just loot of public wealth . they are not printing trillions for nothing aka organized loot and plunder of public wealth .

[@Shack01]

Zircon, we use that in refractory

[@sigsimond9646]

Thanks for this very nice video. I really doubt, though, that the different dating methods are used to correlate one another. U-Pb dating is by far the most accurate and precise method. You only use the other ones because you don't have a choice or want to know more about processes that lead to the creation of non uranium bearing minerals. (yes, it is nitpicking)

[@TinfoilHatWearer]

Mr Manley... Have u done a video on all of the instruments on the most recent Mars rover? If not, could u do one? I would love a indepth video about all the science instrumentation on the most recent rover, and what they do. How they work. Etc... Thanks man.

[@Gigatrix]

Duneite? Finally samples from Duna!

[@nicholasmaude6906]

I'd say that quite a few of the meteorites knocked Mars's surface by high-energy impact events, Scott, have eventually been eaten by Jupiter.

[@mystic_lynx3661]

That's interesting. Thanks Scott!

[@oldfrend]

man how cool would it have been if they'd taken that picture of the hole they dug and there was a worm wiggling down at the bottom.

[@chrisfromsouthaus2735]

I've got a stunning, 100% fusion crusted, 2 gram specimen of the 2011 Tissint Martin Meteorite fall. It's the centrepiece of my collection.

[@FandersonUfo]

so cool to have a drone on Mars - 🛸👽

[@williamyamm8803]

Amazing, we realy have the feeling of doing a ride on Mars while being in my sofa ! :-) Great video as usual Greeting from France !

[@zweibrucker]

Thank you Mr Manley for your intriguing analysis of these meteorites. Your conclusions are a part of my pepere, why? what? and how?

[@mamulcahy]

Fascinating Mr. Manley!

[@rpavlik1]

Thank you for explaining rock dating app clearly, never quite understood it before but the detail of crystallization makes perfect sense now.

[@vamsterr]

"Brought back by The Vikings" me for a half second "Huh? oh right.." XD

[@daos3300]

yeah, we all know the vikings were everywhere, long before anyone else.

[@georgH]

Or we may discover that live in Mars was brought to it by an Earth meteorite...

[@oldbloke135]

Thankyou for taking the time and effort to get clear images of the pages of research papers. It is much appreciated and makes the video much more interesting when you can pause and read them. It is amazing how much science can be done with a stone 2cm across! I wonder if melting and sublimation of the Antarctic "deserts" will reveal more gems like this?

[@davidarbuckle7236]

Crazy good. Keep em coming.

[@outdoornut]

As always, Awesome video!

[@Alexis2andsoOn]

What if they drill into one of the rocks on Mars and it was actually a rock from earth?

[@hellcat1988]

I suppose there are two benefits to the sample return mission. 1, we get the science once we retrieve them. 2, we can see if there is any noticeable change in biological activity (if we do eventually find any) evident in the samples compared to when we eventually land people there, to see if we'd contaminated the planet with biological life from earth.

[@maxlm793]

cool Video enjoy your knowhow, i have seen part of a three stage rocket name "Europa" build from ELDO and i would like to know if there is more behind it.

[@richwaight]

Super interesting! thanks so much for posting :)

[@marktheshark8320]

8:49 would like to see a video on glasses someday! Maybe talk about the market share in the industry with giants such as Mars and LensCrafters

[@dang9668]

That one image of the gray background looked like a lake or a river. Wild

[@GregorShapiro]

Thank you for the explanations! I have always (at least since a child) what information can and has been gleaned from meteorites!

[@jakeireland6810]

Thanks - very clear explanation of this technically complex topic.

[@naworkezmada1431]

I have a small slice of a Martian meteorite definitely one of the coolest things i own

[@robertchadwick8853]

Imagine they get a rock back and find out it's from earth from a similar event 🤣

[@edgeeffect]

The irony of bringing a sample back from Mars only to find it's a Terran meteorite. ALH-84-001.... Fossils? The way I remember they were way way way to small to be able to contain biological molecules.

[@Poxyquotl]

Geo means earth, on mars wouldn't it be Areology?

[@mashcury]

In what a flight you have took us!! Fabulous info! Txx!

[@MichelBiesot]

I believed this bs for over 55 years, but now I know it's all fake. We are looking at ANIMATIONs, so this is NOT REAL! ! ! 💩

[@JoelSapp]

was expecting something about the Virgin grounding controversy But this will do.

[@Spedley_2142]

What's the minimum kind of velocity that a meteorite is likely to hit the moon?

[@MikinessAnalog]

That would depend a bit on its origin, trajectory, gravitic influences on its way to the moon. Say it was ejected from Io or Europa, First, Jupiter would likely just pull it in, but if not & it slingshots around, it could really be "flying" like the Voyager's are. 90,000kph maybe or faster?

[@Spedley_2142]

@@MikinessAnalog I was kid of hoping for a graph frequency graph, showing the most common, least and most possible. I've no idea if the minimum is 100m/s or 10,000m/s

[@MoonjumperReviews]

Interesting. I was in college when everybody went ga-ga over the “microbe fossils” on the Martian meteorite, only to later quickly say, “Oh never mind. Nothing to see here.” My question, microbes aside, was how the heck can they know that a meteorite buried in the Earth for thousands or millions of years came from Mars? They couldn’t just say “something something the trajectory something.” What trajectory?? It was buried in the ground! So, that never made any sense to me. Your video explains it a lot better than they did in news conferences back in the 90s. Although, I still wonder if they can be quite as definitive about it as they seem to be claiming.

[@fridaycaliforniaa236]

Another masterpiece of scientific videos =) Thx Scottie =)

[@lashamartashvili]

very interesting and informative video, as always! thanks!

[@Cybernaut551]

Amazing journalism!

[@foxtrotunit1269]

Hi Scott, JAXA recently proved a *working* Rotating Detonation Engine!!! Pls tell us what you think. What would this mean for Starship in the future?

[@MarsChroniken]

Awesome! Thank you!

[@bgdxmas]

Fascinating insight. Perseverance will get it's core sooner or later.

[@pavel9652]

It got it already.

[@CaseyHandmer]

Please do part 2 on oxygen isotope ratios, crystal gravitometry, and hexaoctahedral magnetofossils in ALH84001.

[@evennot]

Awesome video! Thank you!

[@danconser6709]

Cool VID, Scott!!! Thanks :-)

[@zebo-the-fat]

Thase photographs from Mars are amazing

[@bluepicasso9675]

Love it Scott! Thanks

[@occhamite]

According to what I read on the subject, one point that argues against fossilized Martian life in the Allan Hills meteorites is the size of the features in question. The "fossils" are SO small, that at best, they really push the lower limit for a plausible biological origin.

[@tristanband4003]

At best they could be viruses or giruses

[@ckdigitaltheqof6th210]

It may not have been directly from Mars, but an area once part of it, like the astriod belt, who knows. The sands on Mars are like clay, instead of water dark souls, quick-sand are not, but slower quick-clay soul is similar. Also, deep-sand.

[@johndoepker7126]

Well that was just, simply put, cool! Thank You!