Neil deGrasse Tyson Explains Why Craters Are Round

[@BIGREDDOG09]

the answer is definitely more interesting than the question, glad i clicked this vid

[@MegaSkills9]

Look at my comment above yours. You might also find this interesting.

[@demven04]

Agree, same feeling

[@tmrogers87]

Staying on this vid JUST based on this comment

[@Leftyotism]

lol, right in the feels

[@renierbelarma4770]

Reverse clickbait

[@darrellcole6311]

I love Dr. Tyson's perspectives on common things....makes me try to think outside the box often

[@Hirannagar]

What a brilliant relatable comment!

[@SirSkippy87]

@@Hirannagar I couldn’t agree more! I’m always able to understand what it is he’s talking about because of the way he explains it...

[@J.Tronix]

Tyson 2024

[@steve-o6413]

Exactly, one word can trigger a whole series of questions that nobody ever asks, like firing a thruster in Space what is the thruster pushing against in empty space, or what are you Warping in Space if you want to go faster than light speed. Space cannot be completely Empty...

[@emiliospowerballer1441]

physics isnt about common sense and logic. those are human interpretations to stuff we dont understand. no wonder physics is hard, because it takes people out of their comfort zones and shows them with evidence what does what and how. human logic is flawed in many ways

[@marsomatic639]

9:29 Every physics problem ever in the history of the observable universe

[@Minty_Fresh8]

Like the spherical chicken in a vacuum 😉🤣

[@jessicarolon3870]

What he's saying at the beginning is exactly why I watch these.

[@rastko7261]

I have engeneering mechanics as a subject in my college and I can confirm this.

[@nitehawk86]

@@Minty_Fresh8 Nice, I came here to imagine spherical chickens too. :)

[@zacharywages8153]

Neil's laugh warms my soul.

[@kapnkeggie]

Neil in general warms my soul

[@kapnkeggie]

Too bad for him

[@legendariano4303]

I hope to see another season of Cosmos. Such fantastic series, absolutely love them - both the original and the new ones.

[@counterguardian6145]

Would you laugh or cry if someone framed you for a crime?

[@mattvdy]

R😊jbxcdc 🎉 on khgvgh elsvpeldple TV e😂dcf😂ped❤😂d😂lw😊❤ft

[@cassianogunji]

I can't get enough of Chuck Nice. Every comedian is a very smart person, but Chuck really defines the scale! His new jokes are relativistically faster than the old ones (which he slows down without noticing). He makes me laugh before I have a chance to understand what Dr. Tyson just said.

[@georgeevangelinos7392]

Imagine having Neil as your physics teacher.........

[@msmith53]

He wouldn’t do that for “teacher pay”. And he shouldn’t! Everybody wants the most pay for their work, and low pay does not draw Tyson talents!

[@ThousandMask]

That’s literally what KZbin allowed us to have 😎

[@dubsteplovingginger]

He is our physics teacher?? Are you not learning things? Lol

[@djcammykooma]

Imagine Neil being your proctologist

[@Ghosty2k77]

That would be a dream in paradise

[@aprameyak8578]

This guy could talk about calculus and make it sound interesting.

[@defenderofwisdom]

I could actually use that.

[@fr33nb33n]

He could read the dictionary and make it interesting.

[@Sttuey]

Calculus *is* interesting!

[@aprameyak8578]

@@Sttuey whatever you're into 💯

[@defenderofwisdom]

@@Sttuey But not often taught in an interesting way. Math is sometimes taught in a way which would be evidently interesting to the natural mathematician, but not to people who struggle with it. It took me a while to understand what makes it interesting and I still don't -get- it because, well, it's tricky to learn if math isn't your first inclination.

[@abrahamwondafrash7549]

I was just expecting a video just before I sleep....what a great science bedtime story...

[@petermartin7811]

You have a cool name

[@roshanhemrom4906]

Now I can rest in peace 😌

[@srsaito9262]

If had 3 wishes, one it would be that he taught me when I was in high school.

[@knightofchaos4647]

*taught NOT thought

[@gamil867]

If only we have learnt all of this (startalk program) in high school, society could be so much different. At least understand why put a mask. By the way an asteroid colliding with flat earth would be still a circle ?

[@speedgeek5494]

Learning doesn't have to be dry and boring, but somehow most teachers manage to do it.

[@BrazilianBobcat]

My next two would be middle school and college

[@billytaylor6604]

Up until 6th grade my science teacher was bla bla bla ... learned nothing.... 6th Grade I had a GREAT Science teacher she made me LOVE science.

[@Fabelot1]

My mind must have made an impact with a momentum that exceeds the energy that holds it together, cause it just exploded

[@jiyachhabria4795]

YESSS!

[@chop-daresistance7514]

And that comment did the exact same thing to my mind 🤯

[@ikitclaw7146]

Physics will do that to you.

[@mararhcp]

Well played Fabian

[@pboston6RR]

Dr. Tyson states that Arizona doesn’t have volcanoes but it does. Sunset Crater near Flagstaff is a prime example, and a drive by shows extensive lava fields. That entire area is pock marked with hundreds of volcanoes and the debris fields of the eruptions are vast. Other than that, it’s his usual great description of physics.

[@stupidbeetle]

My 4 year old son asked for a telescope for Xmas because he "wants to know what is out there". Couldn't be more proud.

[@unifiedcodetheory8406]

So I'm still a bit confused, what about the direction of the force? If object A collides with object B at high speed, doesn't the force transfered from object A still maintain the same direction? Meaning the impact crator should be a cone shape instead? If someone could help me out on this I'd really appreciate that

[@popra007]

Well actually they just explain it, it is about hyper sonic speeds...as is Mach 8 - 10 -12 maybe on were the impact disintegrates the "bullet" and a big portion of the target in all directions from the center of the impact...like in a nuclear blast! :O

[@SeinFreak]

10:34 Hawaii does get snow in the mountains, they even have snow skiing! Did I just teach Neil deGrasse Tyson something? Probably not, but if so it was an honor! 😂

[@damyr]

Not sure about NDT, but you certainly taught me something I didn't know. Thx for that. ;)

[@strategicthinker8899]

Australia as well. It has more managed ski terrain that Switzerland. It's 100% true.

[@Morpheux1]

Maybe there's not many walls to throw snowballs at up in the mountains 🤷

[@TerryGrancho]

Mauna Kea (13,803') and Mauna Loa (13,678') only in those two places, not enough for skiing! lol

[@agnosticignostic4086]

This video could have been 30 seconds long. But Neil once again shows storytelling is more important than a simple formula. It s the best way to educate anyone, beginner to experts

[@r0guecaver420]

Neil deGrasse Tysons favorite word "soooo".

[@BrandoDrum]

And phrase: "by the way"

[@erikhendrickson59]

That's just the time it takes his brain to translate his speech from physicist/mathematics-mode to normal-person-mode

[@firstlast9731]

no its precisely

[@apedosmil99]

Followed by, "now watch"

[@srijeethj3616]

Who is here after watching veritasium latest video about asteroid impact on earth, where derek mentioned about the same crater in Arizona 🤓

[@damyr]

I'm not. Derek's new video is still kept in my special queue intended for hours of binge watching. :)

[@DANGJOS]

Me! This was a nice explanation of why the crater disintegrated on impact

[@samrice5926]

Nice doesn't get enough credit. He plays off of Tyson so well, and his comedic injections really bring these videos to the next level. Keep throwin it down Chuck!

[@74360CUDA]

He has really been killing it lately!!

[@chrisnurnberg9599]

You'll never run out of stuff to teach people! love these discussions and yes I'm learning all the time from you guys! Thank you

[@xxdaerdevolxx]

This channel allows me to ask all the questions I once thought up and/or did not think of ever. Or that may have cruised my mind ever so briefly. To my favorite astrophysicist as if I could be personally speaking directly to him. An intimate moment to every last braincell. Please Neil and Chuck, keep these coming, there is invaluable knowledge to be gained with every episode. I would like to personally extend my gratitude beyond a simple button for the both of you, taking your time to share such knowledge in a distilled to simplicity manner where just about any person could benefit. I hope my comment makes it to you Neil, I've seen your Master Class and seen you on Cosmos, I've kept up with you on many occasions and am ever grateful for your selflessness. My everlasting gratitude to you, you've made an immeasurable difference in the person I am and aspire to be. I wish you the very best convenient arrangement of coincidences that favor your time on earth with us! May you change many others lives as you've unknowingly done with my own. Huge fan of your work. Sincerely: One in a million human.

[@ahmedrafea8542]

This is really awesome. I always find it most intriguing when we invoke two variables and how they work together to explain a phenomenon. Thanks very much, Neil and Chuck.

[@PJ818]

Before computer simulations one of the strongest arguments for impacts being the origins of craters was made by Eugene Shoemaker. As a geology student working on his PhD he was granted permission to study 2 of the Nevada nuclear bomb test sites, as well as allowed to go to into Meteor Crater in Arizona. At the test sites and Meteor Crater he found a mineral called coesite, a silicon mineral that only forms when molten silicon is subjected to extreme pressure, like that of a nuclear bomb, or an exploding impactor. The pressures involved in volcanic eruptions aren't great enough, and you don't find coesite associated with volcanoes. Later in life, Eugene, his wife Carolyn, and his friend David Levy searched for near Earth objects using a 48 inch telescope at Palomar Observatory. The ninth comet they discovered later turned out was on a collision course for Jupiter, was ripped apart by Jupiter's gravity, and then struck Jupiter with a series of strafing impacts in July 1994.

[@no6ixfigureabrahams457]

Chuck makes startalk even more fun

[@chrisgoyette4156]

I'm loving this combo. Very knowledgable and hilarious! My kind of life! Keep up the great work guys!

[@TheWeatherbuff]

Neil, we need some clones of you, to teach, like, everything. We'd have a lot more students paying attention. :)

[@ikitclaw7146]

Teachers should use these random explainers in their classes, its grabs your attention for the subject matter and takes around 15-20 mins. and this applies to many channels for many subjects if not all subjects, Start a class with a short fun video then get into the teaching part. Its pretty much free, most schools have the ability to stream video to a classroom and for youtubers thats a badge of prestige, "My worked taught children around the world new concepts" (and free advertisment to the masses for subs lol)

[@TerryGrancho]

You, become one! We need more scientists, now!

[@danebeck7900]

A few weeks ago I saw a meteor streak through the atmosphere and explode in the air. The heat energy absorbed by the meteor as it fell through the atmosphere must have been greater than the binding energy, so it exploded in every direction.

[@michelerossi7121]

This show is simply amazing, and I just discovered it!!! It has everything, a perfect duo, a brilliant comedian and an even more talented astrophysicist. It has sooo many interesting topics and conversations. Keep it up 👍🏻

[@jamesadams893]

Chuck is a putz, if I could mute just him I would

[@andybreckenridge4461]

I'm amazed how entertaining these NDTs videos are without any visual aids! One small correction, there are volcanoes in Arizona. A scant 1000 years ago the Sunset crater cinder cone formed near Flagstaff (a national monument). I also believe asymmetric craters form at really low angles of incidence.

[@daudidaudi]

Le'ts give Neil flowers while he's here. What a legend. I've introduced my son to you and he's hooked.

[@davidm.4670]

did you ever read 'Flowers for Algernon" Sci Fi ...

[@corykrug8675]

These short clips are my favorite, i never miss you of these especially when it's you and Chuck

[@bob_s_drawkcab]

01:04 ... The big ones, the small ones, the meteor ones.....

[@v.k.2320]

Not even 1 minute in and I'm laughing hard. Thanks for science and comedy. 😂😃

[@truss2005]

To his opening the albedo talk with the earthshine blew my mind. One of those subtle mind trips when you realize it

[@UhhhhhnooOOo00oO]

I've met Chuck many times. He always has great interior decor style. Just an observation.

[@rfdrob769]

Geology PhD student here. I would like to clarify that there IS volcanic activity in Arizona. In fact, the volcanism there is extensive! The Uinkaret volcanic field is one example, with lava flows from this field flowing down the Grand Canyon and damming the Colorado River on occasion. Another example is the San Fransisco volcanic field. Here lie the remains of an extinct stratovolcano that at one point was over 16,000 feet above sea level, along with miles of basalt flows and beautiful cinder cones. This volcanic field is potentially still active, with the USGS forecasting that another eruption may occur here in the future. Regardless, Neil is spot on with the rest of his explanation of the physics and geology in this quick talk! I would love to see more geoscientists on star talk in the future. I love the episode with Janine Krippner, and would like to see more similar episodes.

[@Ivansky1]

*5:43* *GREAT SCOTT!!!!!*

[@greendragonreprised6885]

I have often wondered about this because oval craters seems intuitive. Thanks for explaining why we don't find them. One question, if a rock hit the Moon and was traveling sufficiently slowly to survive, would we be able to tell it wasn't a real Moon rock from its geology, and have we done so? Maybe that's two questions.

[@payathecat1433]

Love you guys, but one minor correction : indeed, there is a volcanic field only about 50 miles from Meteor Crater called the San Francisco Volcanic Field just north of Flagstaff, of which Sunset Crater is a national park.

[@abrahamwondafrash7549]

vertasium plus startalk....I am loving it!

[@riblets1968]

Chuck was on fire in this one! He's a great counterpoint to Tyson's educator persona.

[@listenhere1623]

What he's saying at the beginning is exactly why I watch these.

[@robertszerlong7077]

As a point of interest, I have been to Meteor Crater in Arizona and was told by the guide,as I recall, that the mining company did fine the remains of the Meteor buried at the southern edge of the Crater, and the Crater is, in fact, round. This makes Dr. Tyson's explanation even more convincing.

[@kwanryan5914]

I would like to sit down with this clever man under the night sky and just listen to him explaining stuff

[@Djzaamir]

I really enjoy these quick explainer videos. Thank you for doing this.

[@toddmrambo]

Loved this, learned something new. I do take issue with his statement that there is no volcanic activity in Arizona. Northern Arizona, especially around Flagstaff is full of geologically recent volcanic activity. The SanFrancisco peaks are the remains of a volcano, and are only about 40miles from Meteor Crater.

[@clkgenius]

8:13 SQUARED! Loved that extra hand movement there Neil. 😁

[@grannykiminalaska]

Can you cover how Tunguska happened? Learning more is always a great way to realize how little you truly know

[@strategicthinker8899]

Explosion (disintegration) of the meteor in the air before reaching the ground.

[@grannykiminalaska]

@@strategicthinker8899 yes, i know, but its an interesting case and so many ppl said it was ....alien 😉

[@nicko7238]

this is the definition of "things you didn't know, you didn't know, but are glad you learned"

[@aurilightsong6330]

When he gets to the end explanation, especially when I don't Know the answer ahead of time, he always makes it seem like a Big cool thing to learn. Like a brief moment of enlightenment as a golden light descends with the answer on a diamond platter.

[@1906Farnsworth]

But Neil, what about oblong craters like Schiller and Messier? Science deniers have used the expectation of elongated craters as an argument that space is fake, and other nonsense. Are we to believe(they ask) that all objects came in at a 90 degree angle? And thank you for putting the explanation in terms of binding energy; that makes it much easier to understand. Maybe outliers like the ones I mentioned were formed at low speed.

[@christopherjohnson8044]

Thank you Chuck for adding on always.

[@WheelgunsOnWheels]

I use these once a week for a quick cool change up in my high school astronomy lessons. There’s always something Dr Tyson discusses that fits in perfectly in every single unit. Thanks sir, you are my hero.

[@gabrielpaes1922]

Hey Neil! I´m very close to the end of Letters from an Astrophysicist. Loving every second of it. Makes me feel like i am (was) somehow involved in those conversations. Makes me feel alive! Cheers from Brazil and thanks for that letter to us (brazilians) at the begining. Keep looking to the stars!

[@rafaelmarangoni]

Don’t say “flat areas” to refer to the surface of the Moon. Flat earthers are gonna use that to claim “Neil DeGrasse Tyson confessed the Moon is flat!” 😂😂😂

[@keeplookingup911]

This is how Teaching should be done. Now this information will stay with me because not only i learned from the discussion but i also enjoyed it.

[@animationspace8550]

Spoilers: Because craters aren't simple impacts that indent the ground, they are literal explosions by how fast the impactor is going. This is just prior I knowledge I'm proud of, nothing special.

[@NugisBiboSchicken]

hmmmmmmmmmmmmmmmm

[@steve-o6413]

Just like breaking the speed of sound you still feel the concussion Wave...

[@billbaker9623]

All due respect Neil, but there was volcanic activity in Arizona approximately 50 miles from Meteor Crater outside Flagstaff... just 30,000 years later. The volcano responsible for Sunset Crater last erupted around 1085 AD. So of course Barringer Crater was formed by a meteor strike, but its fun to study the history. Thanks for an entertaining and informative episode. Really enjoy your content.

[@kylecastleberry605]

Every time I watch one of these, I start it thinking I know the answer. This is how you explain and teach to young people.

[@ssbothwell]

I can't imagine my life without the Star Talk videos... and I have been a subscriber only for about a year and a half. I now count time pre-Star Talk and post Star Talk (meaning the discovery of the channel)

[@Stick-a-fork-in-Gmorks-tort]

Take that, Julian and Gregorian calenders.

[@jessicabrown2758]

I always wondered what happened to the meteors that left the craters behind. Cool stuff.

[@TheBrister]

This topic ended up being way more fascinating than I expected!

[@RenosVids]

Explain to me why in Sudbury, Ontario, Canada there is a 20 x 30 mile oval crater that does not have a remaining solid core, what happened?

[@theodopulous2623]

These videos are a perfect combination of a comedic guy joking around (and actually understanding) and an interesting guy teaching about 100K people. Perfection equivilant to the higher dimensional sphere that is a black hole

[@iamonlyme4me]

Keep going guys! You can never run out of things to explain!

[@soberlivingwithbrianfrankl8254]

How could u give this a thumbs down? Another great one!

[@KuyaB69]

Neil summed up my thoughts perfectly in the beginning of this video. I think, "Okay I know why craters are round. Let's see what this is all about." Then I watch the video and end up learning some cool new stuff. Awesome.

[@cloudrouju526]

Dr. Tyson and Chuck, what a team!

[@aidanmurray8283]

So interesting! I love these explainer videos - best on the channel I think. Is the binding force of the object the sum of all the intermolecular forces, or is it the average magnitude of the bonds between individual molecules?

[@freelife575]

Neil you explain things in a way that anyone anyone can understand....awesome !!!! Thanks

[@presumedlivingston9384]

If you haven't seen it, Tyson is in a Tide commercial. I just got lucky enough to have his commercial play at the beginning of this video. Booyah!!!

[@charleediaven6278]

Come on. I grew up in the north east those snowballs made streaks on the cars driving by, on garages and walls. Made my eye red and the little girls cry. Great job Doc Et Al

[@botein]

KZbin should create the Love button, cause the Like for those videos aren't just enough! TY Neil and Chuck!

[@stjut]

I never thought about why craters are round, I'm glad I watched yr vlog because the answer is so simple it's amazing.

[@mattdodd561]

Shallow and deep💛

[@rob5232]

Another fantastic explanation video. You guys rock!

[@Charles_Chime]

I can proudly say I studied at " Star Talk University " 🤣. I love you guys ❤ Thanks for doing what you do Niel and Chuck ❤❤🌹🌹

[@jursamaj]

I'm pretty sure there were some physical simulation of cratering before the computer simulations. It doesn't actually require dissociating the impactor to get round craters. Also, low angle snowball impacts don't spew their ejecta symmetrically. And the speed you can throw them at only exceed the binding energy between grains of snow, not the molecular binding energy discussed for high-speed impacts. This is a very different process.

[@followtherules4808]

This is best explainer podcast.

[@adlerfg]

Your videos with Chuck are the most enjoyable. Thank you guys!

[@FWtravels]

If I had a teacher like this in high school, it would’ve changed my life

[@alrightydave]

The amount of knowledge I’ve accumulated through binge watching 15 star talk explainers today is insane. Since my parents are paying thousands of pounds a year to send me to a private school, I feel like this should be a paid service even though I believe that knowledge should be free on the internet.

[@guitargodthor2]

Here's a question: Why does the snow stick to the wall, ceiling or whatever surface you throw it at? It it the same reasoning when a wet paper cloth is thrown and stuck to the surface if a smooth object? The paper cloth continues to be stuck long after it dries too.

[@larful]

I’m enjoying your startalk so much !

[@dunning-kruger551]

0:37 Dunning-Krueger right there! The more you know, the more you know you don’t know.

[@sylvesteraddo1545]

I just love this explainer videos

[@duskfall_777]

Thanks for clarifying this, I once googled this because you mentioned it on the Joe Rogan podcast.

[@nooneinparticular9837]

That's actually really cool! Another dark spot filled with light (and KNAWLEGE!)

[@Grim_Beard]

I don't know which is more endearing, Chuck's enthusiasm for learning or Neil's enthusiasm for teaching.

[@davew5383]

This is very interesting, I have always wondered why craters are empty, this video definitely answers my question. Thank You🙂

[@bullettube9863]

A great explanation! It's noteworthy I think to talk of Meteor crater in Arizona, which from the air looks squarish rather then a perfect circle. Barringer, the man who bought the land the craters sits in thought that a million tons of iron must be buried underneath it. I think it was Gene Shoemaker and Ed Cole who first said in the 1960s that the meteor that created the crater had probably been destroyed on impact and that there was no iron core beneath the crater. Later modeling showed that yes, a meteor explodes on impact, but the square shape of Barringer's carter was the result of the rock fracturing from the impact. I've seen this crater and I urge anyone traveling in that area to stop by and be amazed at it's size!

[@Purpletrident]

I never actually questioned, or noticed, why all craters are round, honestly. This is really cool!

[@gideonvisser2989]

So much fun! Thanks for doing this!

[@SonGoku22221]

Hi Neil! I love your videos! I actually am one of your Hawaii fans, but i have seen snow before lol

[@hareecionelson5875]

Star talk editors need to edit in a clip of Dr Watson saying "how absurdly simple", since people know that meteors can explode, but I've never made the link before

[@tcayzer]

Arizona was volcanically active as recent as 50K yrs ago with dozens of ancient cones and blown off tops. Lots of geological exploration.

[@marcoottina654]

9:20 after several minutes of explanation, the epiphany blows up my mind :D Now, after the next minute of the video, I want to explode snowballs.

[@OmniphonProductions]

I love that the "magic speed" varies in proportion to the mass of the object. On one hand, that seems obvious, but the specifics of how it works...fascinating!

[@EvenTheDogAgrees]

Chuck, thanks for toning the act down for this one.

[@JoshV74656]

I love these explainer videos, entertaining and educational.