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@edwardfletcher7790

Жыл бұрын

This guy is EXHASTING to listen to. He talks so fast and never varies his cadence. Not at all relaxing or enjoyable to watch...😩

@friguspersona

Жыл бұрын

I swear i hear the linode sponsorship stuff hank says at 3:00 AM

@anarchyantz1564

Жыл бұрын

At 1:17 you have a slide of Stegosaurus next to a Triceratops. As you should know, these two did not co exist at the same time. The Stegosaurus lived in the late Jurassic period approximately 155 to 150 million years ago, while Triceratops lived at the very end of the Cretaceous period around 68 to 66 million years ago. Given PBS Eons is only down the corridor from you, you should get them to spot check it or ask Hank Green

@bocarr1042

Жыл бұрын

@@friguspersona😅😅😅😅😅😅😅😢😊🎉

@ADDeeJay

Жыл бұрын

I was wondering if you guys could answer what happens to our modern grid/technology/financial systems/nuclear plants/etc if a storm like the Carrington Event were to reoccur. Does everyone's cellphone explode?

So, not only it was a massive hit, it was also a crit

@1mariomaniac

Жыл бұрын

Equivalent of the paladin rolling high on damage roll, getting a crit, casting smite, and rolling high on that as well lmao.

@oswaldoacuna8052

Жыл бұрын

Me: ooh is that a reference? Tryhards: Crits are fair and balanced

@nelzelpher7158

Жыл бұрын

@@1mariomaniac In RuneScape a huge smite crit will make you lose your most valuable protected item, lose your life and lose your bank.

@CrazyDoug17

Жыл бұрын

It wasn't just a crit, someone got 30 kills and this is asternuked everyone! GG

@dougadams9419

Жыл бұрын

@@nelzelpher7158 your, not you're, that is you are.

It always blows my mind that a million years have passed since the nineties

@aguywithastethoscope

Жыл бұрын

What! When?

@greencreeper9144

Жыл бұрын

@@aguywithastethoscope since a million years ago

@TheRavingLobster

Жыл бұрын

I have no idea what the context of this comment is because I just got here and it was right at the top, but it hit my funny bone in all the right ways and I approve greatly. :'D

@JustinMoralesTheComposer

Жыл бұрын

Wrong, the 90’s started 15 years ago.

@greencreeper9144

Жыл бұрын

@@JustinMoralesTheComposer wait does that mean we've always been within the 90's decade all along? damn, what a twist

As someone who've spent a lot of time learning about dinosaurs, I love to hear them being named "long necks" and "3 horns" Really brings back The Land Before Time vibes.

@bethanygee6939

Жыл бұрын

That's exactly what I (and, I thought ONLY I) was thinking!

@ryancallsin

Жыл бұрын

Three-horns never play with long-necks.

@Magic_beans_

Жыл бұрын

Yup yup.

@mrmoshpotato

Жыл бұрын

I'm a flyer, not a faller!

@colecampbell1906

Жыл бұрын

don't forget the sharp tooth.

In a parallel universe, Stefan has scales and feathers and is reporting what the scientists are speculating about what a world dominated by mammals or insects would look like had the asteroid impacted 10 minutes earlier and at a different angle....

@SayAhh

Жыл бұрын

"Monkeys went bald?"

@Oxygenationatom

Жыл бұрын

@@SayAhh "They could had Fur Pets?"

@Secretgeek2012

Жыл бұрын

In an infinite universe, that is definitely happening, infinitely many times, right now.

@Fungo4

Жыл бұрын

We'd better not let President Koopa merge the two universes.

@whatisahandle221

Жыл бұрын

🐲(LoL)

The fact that a seed fern survived into the Cenezoic in ancient Tasmania (which wasn't as hard hit and had a very moderate climate at the time), makes me think that if things were less catastrophic that perhaps a few species would've managed to sneak through, probably in the southern hemisphere.

@patrickmccurry1563

Жыл бұрын

Australia would be considered weird not for marsupials, but dinosaurs. Nice alternate history fiction right there.

@wesleyscott5637

Жыл бұрын

Some did. 🐊

@StuffandThings_

Жыл бұрын

@@patrickmccurry1563 I mean, that's practically NZ. Loaded with very ancient conifers unchanged for tens of millions of years, no native mammals save for a couple bat species, and with giant birds (Moa and Haast's eagle) occupying major niches. There's even all sorts of other relict species too like the Tuatara. The place was practically a ripoff of the Middle Cretaceous, until humans came and wrecked it all and then Britain came and wrecked it way worse. Still no "seed ferns" (awful term for classification but it covers a lot of neat extinct conifer groups) or true dinosaurs, though. But NZ from a thousand years ago would be a good base to work off of for such an alternate reality! Maybe New Caledonia too for more tropical locations, also from before humans arrived as it suffered a similar fate.

@patricknelson

Жыл бұрын

What are Moa and Haast’s eagle if not “true dinosaurs”? Did you mean no “non-avian dinosaurs” instead? 🤔

@dibershai6009

Жыл бұрын

@@wesleyscott5637🐦

1:16 There is an anachronism here: the stegosaurus was long extinct before the K-Pg asteroid hit. In fact, they became extinct so long ago that the time between their extinction and the asteroid is longer than the time from the asteroid to today.

@emm6064

Жыл бұрын

I saw that too. Points docked on the presentation. :-P

Interesting, the pic you showed with the dinos looking at the incoming asteroid at 1:15 had a stegosaurus , a species extinct for longer at the time of the Chixlclub impact than time since the asteroid's impact!

@Rob-tq7xq

Жыл бұрын

Good catch

@justinbell5421

Жыл бұрын

Did this make you feel good inside, where you the kid to go 'well actually Mrs.X...'

@robertdevito5001

Жыл бұрын

@@justinbell5421well actually Mrs. Bell, it’s were not “where”.

@virt1one

Жыл бұрын

wait till you see some of the wingnuts showing cavemen hunting dinosaurs....

@haole08067

Жыл бұрын

Cinema sins? Is that you?

I'll never cease to be amazed at how scientists can gather evidence from the natural world and use it to develop plausible scenarios for events in our planet's history. The impact spherules found in the fossilized fish gills is a case in point. Amazing!

@proximacentaur1654

Жыл бұрын

Totally agree. I was going to leave a similar comment lol. The techniques for gathering the evidence are as astonishing as what they reveal about our planets history.

@mikebronicki8264

Жыл бұрын

Mind blowing that they can make such a strong case for "the asteroid struck during the northern hemisphere spring."

@joelwexler

Жыл бұрын

They make me feel like such a dunce.

I really really appreciate the Land Before Time references. That is one of my all-time favorite childhood movies!!

@shieldedknights1677

Жыл бұрын

Good to know I wasn't the only one who noticed

@commiecomrade2644

Жыл бұрын

It was a great way to be clear about which groups they were referring to for laypeople and children. Despite the age of the movie Im sure kids are still seeing it today.

@Beryllahawk

Жыл бұрын

Same!!! Gave me the biggest grin.

I love that you referred to all of the groups by their names from Land Before Time

@jagx234

Жыл бұрын

Came to say

@jeremycraft8452

Жыл бұрын

Yep, yep, yep.

@Nirad-jt7en

Жыл бұрын

@@jagx234 same!

@Nirad-jt7en

Жыл бұрын

@@jeremycraft8452 Ducky was my favorite!

@woodfur00

Жыл бұрын

I grew up fully thinking that was just what they were called. I knew they had "real" names but I didn't think Land Before Time invented the "common" ones.

It’s crazy what 10 mins can do. 10mins difference between me one place vs another could be life or death. Especially when driving. People never truly realize what 10 mins can really mean. It makes you appreciate what you have that the luck of those 10 mins gave you

@thomasslone1964

Жыл бұрын

So in that case a few seconds?

@graphixkillzzz

Жыл бұрын

I've seen the difference a few minutes can make. everyone has. you can see the difference from car accidents. a few minutes before and you get to work on time, a few minutes later and you're an hour late. one driver being just one minute further or behind, and the accident doesn't even happen 🤷🏼‍♂️

@mikethomas5276

Жыл бұрын

I used to drive a truck. One day I was rolling through NY state with a group of drivers chatting on the CB for several hours. I finally pulled off just long enough to pee at a rest area. About 15 minutes after I got going again sudden whiteout conditions. All the drivers I was running with were involved in a 40 car pileup......yeah i know what a few minutes can do

@craigcorson3036

Жыл бұрын

In ten minutes, the Earth moves over 11,000 miles in its orbit around the sun. Earth's diameter is about 8,000 miles. Ten minutes earlier or later, and the asteroid would have missed Earth entirely.

@masonjohnson4310

Жыл бұрын

The faster you are going, the more a few moments matter.

i really love learning things i didn’t think i could know. the science just doesn’t stop!

@FearlesSLaughteR1

Жыл бұрын

You may come across a time where it feels like you can’t find more new…. Again, you will find more wonder. I guarantee it. It might suck a bit for a minute, but what’s a minute when there are eons?

can't we just make more dinosaurs in the Large Hadrosaur Collider?

@ScruffyCityFishing

Жыл бұрын

😂

@dineshsadhwani3717

Жыл бұрын

Or just 3d print those suckers

@uncoolmartin460

Жыл бұрын

🤣I guess, but they'd be really really tiny ones, or one even bigger one ... oh sh.. Godzilla !!

@mysphet

Жыл бұрын

We can make them, but they come into existence and disappear very quickly.

@mikearmstrong8483

Жыл бұрын

The problem with making dinosaurs in the Large Hadrosaur Collider is that all the big ones you make keep running into each other.

Dinosaurs: this really isn’t a good time for me. Can the asteroid come back later?

@BlaBoy17

Жыл бұрын

haha ruined 69 likes 😂😂😂

I always find it fascinating that we owe our existence to the destructive force of an asteroid impact.

@dapito7771

Жыл бұрын

It's not 100% the asteroid theory is just that, a theory. You may owe your life, you don't with absolutely certainty

@AespikeRocks

Жыл бұрын

@@dapito7771 Please don't conflate scientific theory with the normal everyday use of theory

@ifbfmto9338

Жыл бұрын

@@dapito7771 The evidence for the asteroid is absolutely overwhelming and incontrovertible

@09patrick22barnes95

Жыл бұрын

@@dapito7771 A theory usually describes a factual phenomenon. I say usually to exclude things like string theory or quantum gravity that are still a crap shoot. A theory does not make the claim that something exists, a theory is a model of how it works. We already know that time is relative for a fact. It messes with GPS. The Theory of General relativity describes how it does mathematically. We already know that living things are made of cells for a fact. Cell theory just describes it. We already know that living things evolve for a fact. Theory of evolution just models the forces and circumstances that make it happen. Someone saying they have a theory that a company is corrupt, really means they "speculate" If a carpenter lays out all of his knowledge into a book about woodworker, he would have something resembling a theory.

@natem1579

Жыл бұрын

@@dapito7771 scientific theory is different. In science, anything that you haven't seen firsthand is a theory. The moment evidence is found that disproves it, it is no longer a valid theory.

The Human Silhouette in the cladistic diagram near the end of this video is that of John Lennon crossing Abbey Road with his fellow Beatles from the cover of the Abbey Road Album.

@projectlost8084

Жыл бұрын

I noticed that too. Glad I wasn't the only one.

This is a fascinating analysis. Timing is everything. Sometimes I wonder what would have happened if the Tunguska event had happened just a few hours later. Then a whole city in Russia or Europe could have been destroyed with millions killed.

@Schneltor

Жыл бұрын

I've always wondered what would have happened if the Tunguska event had happened in the 1960s. I think the USSR would misinterpret it as a nuclear attack and launch.

@sirmalus5153

Жыл бұрын

@@Schneltor America would have aswell, if it had landed on their country. The russians don't have a monopoly on stupid unfortunately.

@Schneltor

Жыл бұрын

@@sirmalus5153 Oh definitely. Actually I think either side would have been justified in thinking they were under attack. There are lots of places it could have hit that would leave both sides scratching their heads and saying, "WTF did they nuke the middle of the Pacific/Sahara/etc." Lol

@joelwexler

Жыл бұрын

​@@Schneltor Lots of stuff on youtube about Tunguska. You've taught me something.

@worldcomicsreview354

Жыл бұрын

@@Schneltor They had the technology to detect it in time though. Though might not have. An asteroid that caused a nuclear-sized blast in a remote part of Namibia was only detected 19 hours ahead of time.

What is interesting is that mammals evolved just after the dinosaurs, then they developed during the reign of the dinosaurs so that after this impact they were ready to rapidly change into what ever life forms were required to access the food on this planet.

@gg3675

Жыл бұрын

Very common dynamic when a bunch of ecological niches are open. Similar in principle to why marsupials are so diverse in Australia.

@derpychicken2131

Жыл бұрын

It's called adaptive radiation, and it isn't specific to mammals. Look at the fossil record after every single mass extinction. The cambrian, the permian, the triassic. Right after those extinctions, you saw the weirdest looking creatures ever that would slowly die off later as more efficient organisms surpassed them. When a mass extinction opens up a ton of niches, no matter what organism it is, be it mammal or fish or reptile or amphibian, they will explode in diversity extremely quickly to fill all those niches, leading to rather weird and unique creatures.

@richard-mtl

Жыл бұрын

Check out Rise of Mammals by Steve Brusatte. Excellent book published this year!

@robertabarnhart6240

Жыл бұрын

@@derpychicken2131 Makes me wonder what will evolve after the Anthropocene extinction event (aka right now).

@timeshark8727

Жыл бұрын

Mammals evolved _before_ dinosaurs... I think you may have made a typo in your original post. Birds and crocodilians and snakes and lizards also rapidly evolved just after the mass extinction... and each had their time as the apex creatures in their environments before being eventually outcompeted by mammals. Never underestimate the power and importance of fur, variable teeth and live birth. Mammals would have been successful with or without the extinction of the dinosaurs, just in different ways.

Duckbills (or big mouths) and three-horns, hmm. Next thing you know he'll talk about the tale that these two along with a long-neck, a flyer, and a spiketail, seperate from their families, creating an unique herd, traveled together in order to find a Great Valley of Treestars.

@TheRealSkeletor

Жыл бұрын

Yup, yup, yup!

In point of fact the dinosaurs did make something like a comeback, albeit not a huge one. In a word, Terrorbird. Terrorbirds were a bunch of related species of large, predatory birds that ran down small to medium sized mammals, like the ancestors of horses. If I recall part of what killed them off in places was continental drift bringing different species into contact with each other and spreading diseases that their new neighbors had no immunity to. But yeah, imagine being chased down with an 8-12 foot tall mix of hawk and t-rex.

@TheHolyHandGrenade79

Жыл бұрын

To clarify, terrorbirds were flightless, so it would be more like being chased by a mix of ostrich and t-rex. Which is maybe more terrifying

@hithere5553

Жыл бұрын

The thought of a 10 foot tall shoebill stork tearing my face off is terrifying.

@laurajaneluvsbeauty9596

Жыл бұрын

Non avian dinos went extinct, birds came from the avian dinos. So no the non avians did not make a come back

@brettlovell8761

Жыл бұрын

IIRC they grew to exploit niches in South America, which was isolated at the time. When the Yucatan land bridge opened and predators from North America moved south, they weren't able to compete.

@mattstyles2498

Жыл бұрын

Everyone knows what terrorbirds are. Y are u talking like a teacher to students?

I absolutely LOVE everything about your Land Before Time references

I'm really appreciating the Land Before Time nomenclature

The real question here is, "Does intelligent life depend on catastrophic events that wipe out competition?".

@Makabert.Abylon

Жыл бұрын

And then does it depend on specific environmental changes on top of that? A theory ive heard is that north and south america got connected, changed the ocean currents. Made Africa much drier and forrest disappeared. So some of our ancestors took the the ground and did pretty well

@MegaEdu4

Жыл бұрын

Yes

@xponen

Жыл бұрын

It doesn't seem to be. The asteroid cleared the ecosystem for mammals to flourish, but human-like intelligence is an anomaly among mammals. I'd expect all mammals to be as intelligent if we are to say definitively intelligence is caused by that asteroid impact.

@MateusSFigueiredo

Жыл бұрын

Humans exist for 200 thousand years. We flourished in a time and place with lots of competition. So no.

@TragoudistrosMPH

Жыл бұрын

The octopus is intelligent. Also, intelligence is difficult to measure...if the scientist uses "human behavior" as the definition... Visual based tests, or dexterity based tests compared to olfactory or electoperception or magnetic-perception based tests of intelligence are kind of why intelligence can be hard to measure. (More practical/relatable is humans are inteligent, but one may memorize sports facts while another memorizes science facts, but whoever is most motivated in a test might do better.) TLDR: intelligence can be hard to measure, and maybe exists unrecognized in other animals.

1:21 Stegosaurus lived during the late Jurassic, _waaaaay_ before the late Cretaceous extinction event

Stuff like this is why I love science

@stankythecat6735

Жыл бұрын

Me also ! It blows my mind that there are people who think science is witchcraft. Flat-earthers and their ilk

@zogar8526

Жыл бұрын

@stankythecat6735 sadly it isn't limited to flat earthers. Almost the entire American right hates science and denies it in all they believe.

@CluelessCatty

Жыл бұрын

@@zogar8526 Bruh your comment says “1 second ago” LOL

@Laurastar2009

Жыл бұрын

The 2022 paper identifying ejecta in the fish gills and pin pointing the time of year just blows my mind. Even as an earth scientist myself, I never imagined we'd ever get that kind of evidence! (But then I specialised in volcanology, not palaeontology.) I cannot comprehend not being amazed at what we can discover or invent!

Fun fact: If the asteroid had been 10 minutes sooner or later in its own orbit, it would not have hit at all. It would have missed us by one full Earth.

@user-pn4py6vr4n

Жыл бұрын

​@Coolio That's... not how gravity, or orbital mechanics work. At all. Earth isn't a black hole. It doesn't have an event horizon. There's no boundary past which an object cannot escape Earth's gravitational pull. If an asteroid passed very close by Earth, but not close enough to collide, it's going to keep going. Earth has a surface escape velocity of about 11.2 km/s. The Chicxulub asteroid was travelling at about 30 km/s. Even if it passed straight through Earth's centre of gravity, it's going fast enough to escape that gravity well. Since escape velocity is lower at high orbits, a near miss asteroid is going to have no trouble just cruising by, arbitrarily close to Earth.

@azmanabdula

Жыл бұрын

@Coolio Gravity doesnt work how you think it works Orbital mechanics and gravity assists are counter intuitive

@ADMICKEY

Жыл бұрын

@Coolio I've tested it in universe sandbox It missed the earth (at least immediately) on all tests Hit the moon 3 times Hit mars once And hit the earth a few years later once The other 100 or so hit nothing

@Jayson_Tatum

Жыл бұрын

@@coolio6669 false.

@isaacgruver7061

Жыл бұрын

@Coolio Earth actually is playing dodgeball, it's just really bad at it. Not enough cardio while growing up, and earth wasn't looking when the ball was thrown

Incredible how many things were aligned the way for the worst case scenario. I really dislike the possible implication of all of that.

@blahblah2779

Жыл бұрын

When the universe wants you dead, you will die. When the universe wants you to suffer, you will suffer. That’s the lesson of the story.

@IrishCarney

Жыл бұрын

Nah. Every year there's a news story about an asteroid "nearly" missing Earth, sometimes coming inside the Earth-Moon orbit. Over the course of hundreds and hundreds of millions of years, finally one hit. It would be weird if the worst case scenario had NEVER happened by now. If the universe were truly malevolent, we'd have been hit like that a lot more often.

@blahblah2779

Жыл бұрын

@@IrishCarney There been several mass extinctions. Doesn’t have to be an asteroid. The universe will find a way to wipe us all.

@bartoszkowalski6986

Жыл бұрын

@@IrishCarney Hmm. Glad to have new insight.

@Mrtheunnameable

Жыл бұрын

@@blahblah2779 The universe is indifferent.

Another thought exercise. What if the asteroid had missed the earth. Would the rise of mammals ever happened?

@mitchellskene8176

Жыл бұрын

Not when it did, but probably.

@MateusSFigueiredo

Жыл бұрын

8:50 maybe. Vegetation change.

@TragoudistrosMPH

Жыл бұрын

@@MateusSFigueiredo dinosaurs could have changed too... Makes me wonder what happened to arthropods? I never hear how they were effected, and reptiles aren't so widely talked about either, post and during extinction 🤔

@naverilllang

Жыл бұрын

@@TragoudistrosMPH I think arthropods, being small, rapidly reproducing animals, were probably among the least badly affected.

I was awestruck by this amazing video. The cleverness of the paleontologists has reached summits of resourcefulness to make the most from the least, in terms of parameters of significance. The video's title had me a bit skeptical, but watching it was more than worth my time.

I always surmised that the Deccan Traps might've been caused by the dinosaur-killing asteroid (see my last question below for why), but apparently the timing is off by a million & a quarter years. (I was encouraged in this belief by a massive impact crater on Mars on more or less the opposite side of the planet from a broad, apparently volcanic field.) * Nevertheless, could the ongoing eruptions of the Deccan Traps been increased in severity or lengthened when the asteroid rang the planet's clock, sending shockwaves bouncing around for days/weeks? * Would the angle of impact have made a difference? * If the shock waves from the Hunga Tonga volcano traveled around the planet for days, how much greater/longer might those from the Chicxulub rock have been? * Coming from the northeast at a 50-60 degree angle, what was on the exact opposite side of Earth in a straight line when it hit? * Would that have affected the crust at that opposite point? So many questions...😎 Forgive me for only being a subscriber and not a member of the paying community. I'm broke & unemployed. But still curious!

@NeutroniummAlchemist

Жыл бұрын

I don't think that our dating is that exact when we go back that far in time. The Deccan Traps were definitively caused by the impact. They were exactly on the other side of the earth at the time of impact. The million year discrepancy isn't even a 2% error. For further proof, look at Mars. There, plate tectonics is dead, and the record of past impacts preserved. And what do we find? Every major volcano has an antipodal major impact site. The evidence for the impact causing the Traps is greater than the evidence against.

@alexontheedge

Жыл бұрын

@@NeutroniummAlchemist Cool. I am reminded of the lyrics to a song from the 50s: "Then I'm not the only one."

@worldcomicsreview354

Жыл бұрын

Flood basalt eruptions without an (apparent) asteroid impact have been correlated with other mass extinctions. I think the theory on if they were related this time is still up in the air. I beleive Chixculub caused a noticeable earthquake around almost the entire planet, which is crazy to think of. Even the biggest ones in recorded human history have barely made it beyond a country.

The thing is, the thing hit at rush hour, when a lot of the non- avian dinos were stuck in traffic on the freeway. If it had hit an hour or so later, they'd have been more spread out, at home having dinner, and had a better chance to vacate to safer distances.

@RWZiggy

Жыл бұрын

the avian dinos were mostly working from home then, because of an avian flu pandemic

I find this analysis fascinating and enjoyed this episode tremendously. Thanks!

Yes I heard this theory a long time ago from an archaeologist that was digging in Montana looks like he was spot on

I say the possibility of us being here with the dinosaurs still living very, very, very small.

@jkfecke

Жыл бұрын

They're essentially zero. Indeed, even holding everything the same, run the clock back to the K-Pg Event and start it again and hominins almost certainly don't evolve - at least, not in the same time at the same way. The odds of us existing are almost zero. But here we are.

@rebelusa6585

Жыл бұрын

You forget 1 thing, today dinosaur taste very good too.

@floranse5205

Жыл бұрын

U got birds, they are dinosaurs

@Shadowtiger2564

Жыл бұрын

We still have alligators and crocodiles which have barely changed since then

@mthlay15

Жыл бұрын

@@Shadowtiger2564 confidently speaking as a Floridian, gators aren't dinosaurs exactly. They are really old. Something like 300mya

“The long necks.” Appreciated.❤

It's wildly interesting that we can figure out it was 65 million years ago, Spring time, 45-65 degree angle of impact and came in from the North East. Damn fine detective work.

So it came from the northeast and caused a huge mess. Sounds a lot like my relatives from New Jersey.

Time and Space are the same, interchangeable. This is why it's fascinating how the slightest change of course in the Voyager spacecraft can send it waaay off trajectory. The same is with events in Time. Even the slightest change means giant changes if you give it millions of years.

Amazing stuff!! I'm in awe at the way scientists are able to figure stuff out like that. It tells part of the story that is Earth and ( most of lol ) the creatures that have been and gone. Thanks for the great video SciShow!

First time to hear that only non-avian dinos died off. Auto liked and Sub! Thank you for being objective and subjective!

@alien9279

Жыл бұрын

They always say that:D Always great stuff here on scishow, welcome in!

@rosegoldhiips

Жыл бұрын

PBS eons has always said this too and I think they're sister channels or something. Hank used to host some of the episodes on PBS eons and because they promoted sci show at the time that's how I found this channel!

I got to ride on a equipment when my grandfather helped excavate Leonardo. A mummified dinosaur found near my home town. There was even food left undigested in its stomach!

Incredibly interesting as always. Thank you for this!

2:30 I absolutely love the Land Before Time reference! 💯😎

Wow.. phenomenon research! Bravo to all scientists involved! Fascinating!

A pretty calm and informative presentation. Good job!

This is the most fascinating video I have seen in quite some time.

I really appreciate you breaking this down into Land Before Time terminology for us layman 🦖🦕

@stinkytoy

Жыл бұрын

How delicious did those leafstars look? 🤤

Best "What If?" episode ever

The Tanis site is absolutely mind blowing

Interesting and informative video. Thank you for uploading and sharing! 😊

So crazy! Fun thought experiment too. Thanks for the video!

Yeah I heard that before that it hit the worst place it could! I wonder how many have hit the middle of the Ocean and only caused Tsunami?

@SelfHealersNutrition

Жыл бұрын

Lmao u really believe that. No fragments of any meteor has been located in any crater because they don’t exist…

@scifisyko

Жыл бұрын

@@SelfHealersNutrition You okay, bro? You’re chatting sh!t, mate.

@Huginn9129

Жыл бұрын

@@SelfHealersNutrition craters do exist tf you on about?

You can wait to download it, but the devs will drop the balance patch whether you want it in the game or not.

@damyenhockman5440

Жыл бұрын

I found a TierZoo viewer

@SimuLord

Жыл бұрын

@@damyenhockman5440 S-tier channel.

@damyenhockman5440

Жыл бұрын

@@SimuLord it certainly is

@Starfloofle

Жыл бұрын

@@ArawnOfAnnwn goddamn always-online games...

Interesting the focus placed on the angle of impact and the rotation of the Earth, since in 10 minutes the Earth moves about 6,000 miles in it's orbit, to the west. 10 minutes earlier or later and it would almost certainly have missed the Earth. Tweak one parameter by a tiny amount and you get a hugely different outcome.

The angle of impact may well have made a big difference, a shallow impact like the recent Russian impact which largely deflected the energy, may have mostly sent the impactor back into space whereas a 90 degree imapact may have sent the energy straight into the Earth.

Even if I an a scientist too, there are moments that I am so happy to life in a space there we can think and write and even search about what ever we want. Even some 100 years before, the researchers of this paper may not allowed to publish the study. Thank you, renaissance people!

@SayAhh

Жыл бұрын

Only in some countries... and only in you are male. Thanks religious extremists!

@proximacentaur1654

Жыл бұрын

Well said. It is a remarkable thing.

Fascinating theory. Thx!

1) great shirt 2) we're using Land Before Time nomenclature now? 3) truly great shirt

So it was Springtime for sturgeon in Dakota?

@therealhellkitty5388

Жыл бұрын

A Producers reference… nice.

@IceMetalPunk

Жыл бұрын

Winter for millennia! (Da, da-da, da!)

I like the cool fact that asteroid impacts deposit a layer of Iridium.

really clever how u showed the picture with stegosaurs and triceratops coexisting so that everyone would comment to correct u and boost the algorithm

Always interesting, thank you.

Imagine if the asteroid hit during the day and dinosaurs could've hid from it instead of being caught asleep.

@wypmangames

Жыл бұрын

on one side of the planet its day while on the other side its night, and the explosion and clouds destroying everything on earth means that even during the day, hiding wouldnt give much options either because of the plants and smaller animals dying

@spacebassist

Жыл бұрын

Rip to all my dinosaur homies who got wiped out in their sleep, that's no way to go

@m.dewylde5287

Жыл бұрын

I hope this is a joke comment. If not, I am pretty sad for you.

@ayansharma997

Жыл бұрын

@@m.dewylde5287 shut up

@MrBeenus

Жыл бұрын

Bruh, it's always day time on half the planet.

Okay, but now I really wish we could model how evolution would have changed the potentiallly surviving dinosaurs in that scenario. What would they have potentially become as mammals worked to fill niches that had become vacant?

@ronanchatterji7819

Жыл бұрын

new dinosaurs an alternative evolution is a book that covers this topic

It’s possible that the atmospheric pressure, the actual amount of air in the atmosphere, may well have been reducing over the millions of years and thus making dinosaurs existence more difficult and that that impact finally finished off a genus that was already dying.

@marlonmoncrieffe0728

Жыл бұрын

I guess another reason why a real-life Jurassic Park couldn't exist...

Great video, but at 1:15 the artist shows the asteroid flying over a stegosaurus, which would already have been extinct for 80 million years.

I was thinking what had happened if dinosaurs where still around and my eyes where catch by a flying bird... very interesting!

It may be an idea to mention asteroid velocity. The Kinetic energy KE is equal to Mass x Velocity squared over 2.

I appreciate that the presenter keeps referring to these species by their “Land Before Time” names.

My little dino-loving brain is so excited to learn something new today!

I don't always create giant impact craters, but when I do...

Could also be due to an event like YDB event that produces the same iridium enriched spherules.. "From Murray Springs Arizona we see a section showing the YDB (Younger Dryas Boundary) layer (dark line) that marks boundary between the sediments bel0w and the Younger Dryas sediments above. This material at the bottom of this dark line dates to 12,800 years ago. What is found just under the dark line are magnetic grains and microspherules, iridium, soot, and fullerenes all indicative of a significant extra-terrestrial event. At this exact site very early native American Clovis artifacts, a fire pit, and an almost fully articulated skeleton of an adult mammoth were recovered just below the black line. Excavations by Vance Haynes, Jr., and colleagues also revealed hundreds of mammoth footprints in the sand infilled by black mat sediments. These footprints and the mammoth skeleton appear to have been preserved by rapid burial after the YDB event "

Love all the land before time references. ;)

I should note that I waited 10 minutes to watch this video.

@CL-go2ji

Жыл бұрын

I think you have a weird sense of humor, but I´m not sure.

@pablohammerly448

Жыл бұрын

​@@CL-go2ji Give it 10 minutes of thought and you'll probably be sure! 🥴

I heard that in the future your phone will be able to track your location based on gravity anomalies, doing away with the need for satellites. Pretty interesting.

This is really the title for the follow-up episode that broadly and wildly conjectures what might have happened until today based on when/where it hit and how that could have affected then current and later species development. The title for the above video should have been ‚The asteroid timing/location gave mankind its best shot‘.

There's a very good National Geographic special magazine on this subject. Worth seeking out. I have a copy.

Are those allosaurs at 0:23? I'm pretty sure they were already extinct before the asteroid hit. Same goes for the stegosaur seen at 1:15.

@CL-go2ji

Жыл бұрын

Yeah, the stegosaurus was bothering me. I think they had been extinct then longer than the triceratops have been extinct now?

@paleozoic

Жыл бұрын

@@CL-go2ji The classic, Triceratops lived closer in time to humans, than Triceratops did to Stegosaurus. The distance between humans and Triceratops is 66 million years, the distance between Triceratops and Stegosaurus is about 80 million years.

@lordofthegeckos533

Жыл бұрын

Allosaurus itself and the giant carcharodontosaurs were, but there were members of another family of allosaurs called neovenatorids, and possibly some small carcharodontosaurs, still alive when the asteroid hit.

@paleozoic

Жыл бұрын

@@lordofthegeckos533 I recall that depends on which direction the recent megaraptoran debate swings. They were originally considered to be neovenatorids, but if they are actually tyrannosauroids, then it's possible that allosauroids did not make it to the end. As far as I know, all possible Maastrichtian carcharodontosaurid remains were reinterpreted as either megaraptoran or abelisaurids, which again, it depends on whether megaraptors are on the carcharodontosaurian or tyrannosauroid branch.

What happened at the antipode of the impact site?

At this distance a phrase like "around this time" when referrng to those volcanos is interesting. After all the best guesses is probably around five hundred thousand years up to one or two million! Five hundred thousand years to two thousand thousand years. The effects from such volcanoes would probably be neglible within say a few decades or less just like they are in modern day.

Omg I love that you put the ad at the end. Its so convenient. I will like and share this video not only because of that, but because I genuinely enjoy this kind of extremely informative content. Thank you

There may have been one we missed by ten minutes too. Who knows.

@GrnXnham

Жыл бұрын

Absolutely. When you "what if" something, it's always fun to "what if" it the opposite way, too!

Oh God like depending on how far back you will put that loss of 10 minutes oh wow it could stack up to being a lot like straight up to the point where like Earth and Theta didn't even collide so we wouldn't have the moon for so many other things or if you put it at the point when Theta hit we again may not even have the move but let's say we did that would still affect so much damn

@borttorbbq2556

Жыл бұрын

Side note I haven't watched this yet and a difference of 10 minutes would actually make it to where the planet would not have gotten hit by the asteroid and humans may never have actually evolved and instead we would be some form of highly intelligent dinosaur but who even knows

@user-vw4xp5nt9f

Жыл бұрын

well, maybe. intelligence isn't the end-all be-all of evolution, it's just another niche that animals are able to spec into. intelligence can be beneficial in certain environments but ultimately uses a LOT of energy, and if it isn't useful, it will not be evolved

@paleozoic

Жыл бұрын

@@borttorbbq2556 This is a boring answer, but, it depends, birds have still kept the basic theropod body style for the last 150+ million years, so it's possible that other dinosaur groups wouldn't have changed a whole lot either. Crows are some of the most intelligent dinosaurs around, but they are a far cry from human-level cognition. And consider the time between now and the extinction is a shorter span than the extinction and the end of the Jurassic era. It likely has to due to constraints on their anatomy. Dinosaurs had become too derived / advanced early on which made it extremely difficult to out grow doing what dinosaurs do best. Humans and all the other large mammalian groups that evolved post-extinction certainly wouldn't have existed, but there could eventually have been a very successful medium, possibly large mammal clades evolve. Or, large crocodylomorphs may have taken up that role, possibly even out competing mammals. Mammals could have just straight up gone extinct.

@borttorbbq2556

Жыл бұрын

@@paleozoic oh I just posited this before watching.

Never outgrew my fascination with dinosaurs and other extinct creatures! Enjoying all SciShow videos!

I’d like to think the research paper started as a “what if” convo at the pub for the scientists

as the Earth moves through its own diameter in 7 minutes, if the asteroid had hit 10 minutes earlier or later it would have missed by 4000 km.

@stevie-ray2020

Жыл бұрын

Also they need to calculate what effect those 10mins would've had on its approach, when the different gravitational masses of the Sun & Jupiter are taken into account (which would be simply guessing)!

@rogertulk8607

Жыл бұрын

@@stevie-ray2020 cheers! I just went with the simplest case.

Oh those Land Before Time references. When he got to longnecks I was like "oh stop it". Just short of calling "meat eater" "sharp teeth".

At 6:45 "because the Earth turns, different timing would have resulted in the asteroid hitting at a steeper or shallower angle." "Turns" is a mistake, sorry that didn't get caught in the editing process of this wonderful video's script. The surface of a spinning ball presents the same angle as a stationary ball. It's Earth's orbit around the sun that would have changed the angle of impact. Earth orbits at just about 30km/second so in 10 minutes, as proposed in the title, our planet would have moved 18,000km or 1.5 times our diameter, missing the impact entirely. It's amazing how unlikely such an impact is when you consider how difficult it is to hit a moving object!

One consequence of the impact was acid rain. It is possible that this basically destroyed the bones in the upper layer of the ground since acid soils do destroy bones. The sauropods have much bigger and denser bones so theirs would be more likely to survive.

So with some of the terminology that you used I can’t help but think you were using a land before time reference

This is what I've been saying. Fermi Paradox is the real deal. It's astounding that we're here instead of us being a large-predator planet which would preclude any civilization. Earth is definitely in the final 20%, and probably the final 10% of habitability. There would not have been time.

Really interesting to think further. I can’t help but appreciate the timing though. We may not be here otherwise.

I see how a change in location would really change the outcome of an impact. But I had been previously led to believe that impact angle didn't matter that much. Once that amount of mass is moving that quickly, the amount of energy unleashed is beyond nuclear, more or less atomizing everything at the impact site. Thats why, regardless of angle, craters are always perfectly circular from the point of impact and never oblong or elliptical.

So amazing - each scientific conclusion only got progressively more and more impressive. Yet, I wonder can this deep knowledge of the past can be translated to effect on the future?

@mario97br

Жыл бұрын

We look out for rocks falling of the sky.

I was there in person, 66 millions years ago.... unforgettable sight for sure. I slathered on SPF 10,000 sun screen and laid out to tan. I couldn't turn over fast enough so one side got 'well done' while the other was 'medium rare'. After that, there was 'All You Can Eat' Dinosaur Cooked To Perfection served every night. I must have put on 100 pounds. Later, food got kind of scarce. Hard to eat coral. Good thing some of those little hairy 4 legged warm blooded things you call 'Mammals' survived. We had to eat 'rat' for over 1,000 years. Eventually, more tasty Mammals did evolve. Your famous Darwin was partially correct, 2 legged bipedal's like me learned survival skills by imitating nature. Dumb bipedal's starved to death. Smart bipedal's thrived. In time we re-populated the round rock you call Planet Earth. Today, we hide in plain sight. If you knew a more advanced bipedal species existed, you would study us to death. That would be a very bad choice... remember we ate 'rats' for over a 1,000 years. Homo Sapiens are far more tasty when cooked right. We get bored chasing stupid bovines, canines, and felines. We have allowed the fat, lazy, sloth like species called 'Humans' to breed in excess. Today there are over 6 billion tasty 2 legged Human critters roaming free range. Harvest is long overdue.

@stevengoulet3723

Жыл бұрын

8 billion

@SJR_Media_Group

Жыл бұрын

@@stevengoulet3723 Yum Yum... 2 billion appetizers.

@theclaudeqc3rdone290

Жыл бұрын

I shall warn you if you fight all of the same time. Them maybe one of the countries might use a very powerful weapon, called the atomic bombs

@SJR_Media_Group

Жыл бұрын

@@theclaudeqc3rdone290 me thinks might need one of those atomic bomb thingies. Can I order one from Amazon ?

@theclaudeqc3rdone290

Жыл бұрын

@@SJR_Media_Group not sure if any of the countries owning it want to seel them

Might be possible thanks to a combination of these gravity anomalies and the fact that the Deccan Traps are nearly perfectly antipodal to the impact site to pinpoint the population of objects (Aten, Apollo, etc.) that the asteroid came from.

Land before time references - 10/10.

I caught this video 10 min after it posted. What does that mean?

@mmcdade6224

Жыл бұрын

Maybe you’re spending too much time on the internet

@user-vw4xp5nt9f

Жыл бұрын

you've either been saved form a horrible disaster or are 10 minutes within experiencing one

This just validifies my catastrophizing 😂