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These are the asteroids to worry about

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Stephen Hawking thought an asteroid impact posed the greatest threat to life on Earth. Thanks to Kiwico for sponsoring this video. For 50% off your first month of any crate, go to kiwico.com/veritasium50
For other potential world ending catastrophes, check out Domain of Science: ve42.co/DoS

Special thanks to:
Prof. Dave Jewitt from UCLA Earth, Planetary, and Space Sciences
Prof. Mark Boslough from Sandia National Labs
Scott Manley: jpvid.net/u-szyzyg
Ryan Wyatt at Morrison Planetarium
Prof. Amy Mainzer
Alexandr Ivanov for the opening shot of Chelyabinsk Meteor

Maps of Asteroid Impacts - ve42.co/Map

Time passing animation from Universe Sandbox - universesandbox.com/

Opposition Effect - ve42.co/Belskaya2000
Belskaya, I. N., & Shevchenko, V. G. (2000). Opposition effect of asteroids. Icarus, 147(1), 94-105.

Potentially Hazardous Asteroids - ve42.co/Perna2013
Perna, D., Barucci, M. A., & Fulchignoni, M. (2013). The near-Earth objects and their potential threat to our planet. The Astronomy and Astrophysics Review, 21(1), 65.

Survey of Potentially Hazardous Asteroids - ve42.co/NEOSurvey

Population Vulnerability - ve42.co/Rumpf2017
Rumpf, C. M., Lewis, H. G., & Atkinson, P. M. (2017). Population vulnerability models for asteroid impact risk assessment. Meteoritics & Planetary Science, 52(6), 1082-1102.

Size distribution of NEOs - ve42.co/Trilling17
Trilling, D. E., Valdes, F., Allen, L., James, D., Fuentes, C., Herrera, D., ... & Rajagopal, J. (2017). The size distribution of near-earth objects larger than 10 m. The Astronomical Journal, 154(4), 170.

2020 NEOWISE Data Release - ve42.co/NEOWISE

National Research Council Report- ve42.co/Defending
Board, S. S., & National Research Council. (2010). Defending planet earth: Near-Earth-Object surveys and hazard mitigation strategies. National Academies Press.

Tug Boat - ve42.co/Schweickart03
Schweickart, R. L., Lu, E. T., Hut, P., & Chapman, C. R. (2003). The asteroid tugboat. Scientific American, 289(5), 54-61.

Gravity Tractor 1 - ve42.co/Lu05
Lu, E. T., & Love, S. G. (2005). Gravitational tractor for towing asteroids. Nature, 438(7065), 177-178.

Laser Ablation - ve42.co/Thiry14
Thiry, N., & Vasile, M. (2014). Recent advances in laser ablation modelling for asteroid deflection methods. SPIE Optical Engineering+ Applications, 922608-922608.

Yarakovsky Effect - ve42.co/Yara

DART Mission - ve42.co/DART

Nuclear 1 - ve42.co/Ahrens92
Ahrens, T. J., & Harris, A. W. (1992). Deflection and fragmentation of near-Earth asteroids. Nature, 360(6403), 429-433.

Nuclear 2 - ve42.co/Bradley10
Bradley, P. A., Plesko, C. S., Clement, R. R., Conlon, L. M., Weaver, R. P., Guzik, J. A., ... & Huebner, W. F. (2010, January). Challenges of deflecting an asteroid or comet nucleus with a nuclear burst. In AIP Conference Proceedings (Vol. 1208, No. 1, pp. 430-437). American Institute of Physics.

Researched and Written by Petr Lebedev, Jonny Hyman and Derek Muller
3D animations, VFX, SFX, Audio Mixing by Jonny Hyman
2D animation by Ivàn Tello
Intro animation by Nicolas Pratt
With Filming by Raquel Nuno

Music from epidemicsound.com "Stellar Dance" "Orbit" "That Notebook" "What We Discovered" "Out of Poppies" "Handwriting"
Images and video supplied by Getty Images

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2020/11/29

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コメント数 29 509
AA-VFX
AA-VFX 5 ヶ月 前
I love to see the space animations. Well done, production team & animators!
Piero Wirth
Piero Wirth 24 日 前
@bogos binted ok
Sheal Dedmon
Sheal Dedmon ヶ月 前
So you still like cartoons. That's what they are counting on. Myself I prefer facts and actual footage. It's a pity with all this technology we can't get something besides animation.
Blue WHALE Studio BlenderAnimations/dominoes/etc
you know arout one meter wide objects impact earth all the time . . but most of them fly over the ocean and are aren't seen by anyone and prettymuch all of these relatively small objects burn up in the atmospere and aren't realy that exciting
DMac604
DMac604 2 ヶ月 前
its all NASA has
Wesley Yu
Wesley Yu 2 ヶ月 前
Except the sounds
Monkeygoatlicker
Monkeygoatlicker 2 ヶ月 前
Fun Fact: If it wasn’t for Jupiter, the largest planet in our solar system, the Earth would get hit all the time with asteroids. Jupiter’s rich gravity ALMOST always takes the blows.
Alex Calderon
Alex Calderon 23 時間 前
@Sang Dalang hahaha brooo
J Smith
J Smith 日 前
It's an especially fun fact for flat earthers, who apparently claim general relativity is bogus, gravity is not a thing, and there is no way to prove its existence or observe gravity in action. Apparently they have never heard of Schumacher-Levy, or just choose to dismiss that particular inconvenient example of why they are wrong.
smart451cab
smart451cab 5 日 前
@David J Write your profound thoughts down while you're stoned. Then, read about it after a good night's sleep and a cup of coffee, LOL.
David J
David J 5 日 前
What if the larger planets, with their size and gravitational pull,were unknowingly to us, the angels that are constantly battling the meteoric agents of Saturn, who want to destroy us, 🤔. I'm just saying, because the herb 🌿 is talking to me
smart451cab
smart451cab 6 日 前
@JUDASFINKELSTEIN Jupiter has a LOT of gas. Gas is matter and so, it has mass. Go outside on a windy day and you'll notice. If it didn't have mass, it wouldn't be attracted to Earth, and our atmosphere would quickly bleed away into space.
Playful Cloud
Playful Cloud 2 ヶ月 前
That scientist dude is definition of being cool and a nerd at the same time
margus kiis
margus kiis 日 前
He`s quite a bullshientist. Mixing scientific facts with he stupid armageddon fantasies which never will happen. He knows it but tries to sell it out.
Qais Anwari
Qais Anwari 3 日 前
🤣🤣🤣
MAK Auto
MAK Auto 17 日 前
He speaks and looks like Rick from Rick and morty
Śïr Çärtïër
Rs
Darth Ren
Darth Ren 21 日 前
That scientist guy is Dr. Derek Muller 🧑‍🔬🧑‍💻 👨‍🏫 🧑‍🎓
Richie l
Richie l 2 ヶ月 前
I love how the scientists basically said "well when the asteroid is a problem, we'll figure it out then" true procrastination in its finest
Bradley Maggard
Bradley Maggard 24 日 前
@Anonydun 82fgoog Just a matter of time. Thats if Yellowstone or Campi Flegrei don't take most of us out first...
Anonydun 82fgoog
Anonydun 82fgoog 24 日 前
The simple truth is - any asteroid small enough to be maneuvered by us is not really going to do much damage. And any asteroid that has to potential to be a major catastrophe is going to be so massive that there is absolutely nothing we puny humans can do about it. So the ones we have to worry about are the ones we can least do anything about....kind of a catch-22. If you want to deal in hope then I recommend religion... but things are going to happen either way.
Bradley Maggard
Bradley Maggard 25 日 前
@Dave Crupel I agree, it wasn't a joke. He just claimed it was after Pavel shine some logical on his statement.
Manuel Garcia
Manuel Garcia 28 日 前
There's probably noone willing to fund that research
Poetic Ice
Poetic Ice ヶ月 前
@Dave Crupel I get it, you’re the smartest person in the room, but everyone else is in a completely different room. You’re a grown man typing these little hissy fits cause you didn’t find a joke funny. Maybe I should play a song on the world’s smallest violin. It was clearly supposed to be ironic because calling the largest space agency in the world “procrastinators” doesn’t really add up, now does it? So if it looks ironic, and if they said it’s ironic, then guess what it more than likely is?
Mark O
Mark O ヶ月 前
The idea of a kilometres-wide chunk of iron getting so hot that it becomes - not just a liquid, but a GAS - is genuinely hard for me to imagine.
Nyk Zukowski [Aether Division]
Yeah that was pretty crazy to think about
Anonydun 82fgoog
Anonydun 82fgoog 24 日 前
That's when you realize that the "velocity SQUARED" component of kinetic energy starts to get seriously ridiculous at very high speeds. And the law of conservation of energy states that if you are slowing down, that energy has to go SOMEWHERE. And if you slow down all of a sudden, well you get the energy all of a sudden too :)
Sciencer scientifico
Yeah, falling at 60,000 kmph!
Hinsberg Reagent
Hinsberg Reagent ヶ月 前
plasma buddy .
Warrior
Warrior 年 前
Hats off to the cameraman who filmed all this space stuff for us.
Gamerer Gaming op pro
too many wooshers here
Auroynklidavamp
Auroynklidavamp 5 日 前
Even though this joke isn't original or unique, it's still funny
RENZEENO
RENZEENO 15 日 前
Really original
Hrmb
Hrmb 15 日 前
@Levi Kassinove you relize that was satire right? Jesus Christ
Warrior
Warrior 19 日 前
@Spidey sense I wish you could get that much likes on Ur comment too so you shouldn't get jealous with others.
Guitar Lessons BobbyCrispy
Whoever came up with 'Don't Worry About Things You Can't Control' obviously never watched this video.
J Smith
J Smith 日 前
..or apparently heard of the dinosaurs and their untimely demise
margus kiis
margus kiis 日 前
You are worring about asteroids? Yeah, you have nothing else to worry about then. Keep going, lucky guy.
Gorilla Pimp
Gorilla Pimp 8 日 前
Ok...worry about it then
Matthew Gee
Matthew Gee 15 日 前
I still say that even after watching this video. In fact this video gives me credibility to say exactly that. I mean hell a extinction level event for the next 100 years is practically zero. It’s better and more logical than fear mongering.
Tricia Vonne
Tricia Vonne 2 ヶ月 前
Never have I ever imagined that I would grow emotional for the dinosaurs that no longer exist...until I watched this. Watching the excerpts of cgi dinos trying to run from that unexpected pain really just sort of broke my heart. How horrible it would have been to just be minding your business, eating a plant or carcass...and BOOM! You're suddenly in excruciating pain and being cooked alive. How awful!
margus kiis
margus kiis 日 前
@Rio Gunawan dinos died out during millions of years, btw.
margus kiis
margus kiis 日 前
I`ll say you one little secret. All the dino sequence is not a documentary. This is a pure fantasy. This is CGI.
Jose Honoridez
Jose Honoridez 12 日 前
If Tricia had seen the video of a boy trying to help his playmate who was more wounded than he on August 6, 1945, she would have been more brokenhearted.
Atlantis IRL
Atlantis IRL 12 日 前
I have a theory that if something really created us, the way some people believe, they also created the DInosaurs before us, sort of a trial at creating life. By most measures it was successful, didnt they thrive for a long time? Then it was time for the next faze in the ''experiement" if you will, and they had to reset the planet before hand. They were smart enoujgh to know that what they were creating next wouldnt be designed to co-exist with things like Dinosaurs.
Anonydun 82fgoog
Anonydun 82fgoog 24 日 前
There's only so much suffering you can do and pain you can feel in a few minutes. I feel worse for the ones who survived but starved to death because of the "nuclear winter" effect... knowing that there used to be food everywhere and now there's no food anymore anywhere, and not having the brains to even understand what happened.
Artemis 7
Artemis 7 ヶ月 前
"We're really not that good at detecting asteroids before they're going to hit us." Well. That's comforting.
margus kiis
margus kiis 日 前
@Owen Halverson The american endless fantasies about big bang catastrophes are so funny.
margus kiis
margus kiis 日 前
@Owen Halverson Lol
Owen Halverson
@margus kiis in spirit yes
margus kiis
margus kiis 日 前
@Owen Halverson You was there when dinos died?
chrikke
chrikke 14 日 前
@Anonydun 82fgoog ?
The RRDon
The RRDon 2 ヶ月 前
There is something like a 60% chance an asteroid impacts over an ocean. I would appreciate an analysis of the effect of a 1km or even just a "city killer" landing in the ocean. I have watched several presentation on the [potential effects of the collapse of the La Palma face. It seems like an impacting meteor (or even an airburst) in the ocean would generate an even more catastrophic tsunami than a direct surface impact.
Xeryus
Xeryus 日 前
@margus kiis Depends on size but most likely
margus kiis
margus kiis 日 前
@RI Outboards did the underwater nuclear tests by the Bikini atoll wipe some city or village?
margus kiis
margus kiis 日 前
I can tell you whats gonna happen. The asteroid will disintegrate into small pieces in the air. No tsunami comes. Or else. Only some bangs, so keep away from the windows. The old bullshientist is keeping talking his sick fantasies how all the people in a city die because a car would be broken. Lol.
tvannaman2000
tvannaman2000 ヶ月 前
Rogue Wave is a novel covering this. Not sure how accurate it is, but talks about a large column of water, earthquakes and multiple concentric tidal waves emanating from impact point.
Xeryus
Xeryus ヶ月 前
@DKD81 yeah would have been great
Johnny Boy
Johnny Boy 2 ヶ月 前
“To put your mind at ease, here’s some more likely disasters for earth”. This is like when you have a headache and someone offers to punch you as a distraction.
Isaic02
Isaic02 ヶ月 前
@E psilon More like putting a, relatively, irrational fear into perspective.
Yes
Yes ヶ月 前
@E psilon yeah that's the point. Why be afraid of what you can't do anything about
E psilon
E psilon ヶ月 前
@Yes No on the contrary. When this thing hits you wouldnt stand a chance anyway, so why worry in the first place. Just enjoy life as much as you can, while you can.
Yes
Yes ヶ月 前
@E psilon I mean if that scares you you gotta grow up
I support a free & stable Afghanistan
*works every time
EnglishTeacher
EnglishTeacher 2 ヶ月 前
Amazing details from an expert that even a layman can understand. Thanks Professor.
margus kiis
margus kiis 日 前
He knows that possibility that a bigger asteroid can hit some city is something 0,000000000000000000000000000000000000000000000000000000000000000000000000000000001% but oh no, he keeps telling his fantasies how people can not leave because some car is broken. and they all gonna die. He should start write fantasy books instead searching for the meteorites.
Fan Daddy
Fan Daddy 25 日 前
Cen yu tich mee enrichh sar ?
exgenica
exgenica ヶ月 前
For the first time, and in just the past five years, we've had at LEAST two interstellar bodies of significant size enter the solar system (1I/‘Oumuamua, 2017 and Comet 2I/Borisov, 2019). I say at "least" two because we wouldn't know if we missed any others. The thing is, *these interstellar bodies travel 3 to 4 times faster than normal in-system asteroids* and since damaging energy increases as the SQUARE of the velocity, they can present a particularly high risk to civilization if they strike Earth. The fact we have seen two in just 5 years as our detecting awareness, tech, and efforts improved, suggests they can be much more common than we knew. Thus, when this video talks about probabilities and addresses only in-system objects, it is ignoring this added component to the equation. Interstellar bodies like these can also come in from any direction including far off the ecliptic plane and may be more likely to be undetected.
Anonydun 82fgoog
Anonydun 82fgoog 24 日 前
Well there's a couple things here. First, now we're actually looking, which we weren't doing before. And second our ability to detect is getting better all the time. So obviously we are going to see more than we used to see and have to adjust our estimates accordingly. But like the man said - we should expect that we're the norm, not the exception, so this was probably happening all the time only we didn't realize it. Time will tell.
Abhishek S.
Abhishek S. ヶ月 前
Also, I read this thing in an article where they presented a newer perspective. It said, Oumuamua was relatively stable and our solar system is kinda passing it at high speed
jimbobeire
jimbobeire ヶ月 前
Hey, don't be so negative about our low detection of interstellar objects, maybe with didn't miss lots of them, maybe that's the start of a massive bombardment that's only just reaching us ;)
land
land ヶ月 前
exactly what i thought!!
Edu
Edu ヶ月 前
Yup, but the probabilites of any of them hitting the Earth are orders of magnitude smaller than that of Near Earth Objects
Submersed24
Submersed24 ヶ月 前
There's something so cool about the core of a planet obliterated 400 billion years ago that somehow made its way to earth to get picked up by someone. 400 billion years ago it was deep inside the planet and Earth was doing it's own thing entirely. Would be so cool to be able to just look throughout time and see what actually happened with that meteor
Zno Agar
Zno Agar 26 日 前
4 billion, not 400
Sandman
Sandman ヶ月 前
I think you mean million, not billion.
adzplus1
adzplus1 ヶ月 前
The universe is only 14 billion years old. I can guarantee you that there is no rock older than that
Jay Bloodworth
Jay Bloodworth 2 ヶ月 前
Theoretically, it should be possible to set up a rocket on the surface of a near earth object that (instead of pushing the object out of orbit) changes the angle of rotation so that it will bounce off our atmosphere instead of penetrating it. But this method relies on three assumptions 1: that we can detect the NEO in adequate time. 2: It is a solid object with a surface (instead of a loose clumping of rubble) and 3: that we can accurately detect its current angle & rate of rotation to program a remote drone to fire in sync to create a desirable rotation. I noticed you didn't mention this as an option, and that's not surprising since it's only really viable for NEO's that are less that 100km.
Anonydun 82fgoog
Anonydun 82fgoog 24 日 前
"bounce off our atmosphere" - there is no such thing. This concept arises from journalists who know nothing of science trying to explain things to sell copy. Sure, you can cut through the atmosphere if you're going fast enough. But you won't "bounce", and you will be slowed down in proportion to the density at the altitude you traversed. Meaning that if you are slowed down enough all you've managed to guarantee is that you'll be coming back next orbit for round 2...
RI Outboards
RI Outboards ヶ月 前
nothing you said is viable! there is ZERO chance of that happening. Real-world practicality is such that we wouldn't be able to design such a system in time. and they did go over this: most asteroids ARE just unconsolidated material.
Roland Bargiel
Roland Bargiel ヶ月 前
The video does discuss this option?
The illusive Man
The illusive Man ヶ月 前
@sam berfpppo lolll
Torgeir Molaug
Torgeir Molaug 2 ヶ月 前
In addition to asteroids, now you've made me worry about all the other potential global catastrophes that are more likely to happen.
margus kiis
margus kiis 日 前
Like war
panther105
panther105 2 ヶ月 前
Prof. Jewett - Could listen to him for hours. Not sure why (maybe from a misplaced love affair with science and tech) but I always assumed we had some kind of technology/military option to protect us from a meteor or asteroid strike. What an eye opener that all of the ideas we've all heard about over the years are pretty much useless..... Professor Jewett is just so cool, calm, and collected - just the kind of guy you want telling you, we all only have one hour left to live..!!
margus kiis
margus kiis 日 前
Jewett is bullshiting a way too much. Intentionally
Pavel
Pavel 2 ヶ月 前
Water is wet, they will refer your case to the nearest psychiatrist.
Water is wet
Water is wet 2 ヶ月 前
Reporting this to ADL.
Rabidavid
Rabidavid 24 日 前
Having just seen another video trying to debunk a future prediction, and the concerns raised by commenters, being so relieved, it's good to see a realists perspective, raising that we have so many other things to fear on the planet, on a day to day basis. It's time to get on with our lives, and enjoy the days while we have good health.
Trollster713
Trollster713 8 ヶ月 前
“If you are scared of a meteor impact then this will put you at ease, *you can die a thousand more painful ways* “
Auaryx
Auaryx 12 日 前
well on the bright side, everyone dies so there'll no one to leave behind.
isata bah
isata bah ヶ月 前
Luckily it did not happen to me I was born in 2014
isata bah
isata bah ヶ月 前
Imagine those people were you that would be bad
riverseed
riverseed ヶ月 前
@Kyle Oien i dont think the whole planet, but DEFINITELY all of north america.
Karmas Facts
Karmas Facts ヶ月 前
Yeah you can die having the air forced out your lungs in seconds then crushed while at a terrible music concert...
Cirno's number ⑨ fan
I love how you save the sponsors until the end of the video, why can't most JPvidrs do that?
albert scanlon
Very informative and interesting. The scientist chap was very good of explaining the history and nature of asteroids. His lessons would sure be interesting
Loretta Caputo
Loretta Caputo 4 日 前
I am amazed that in light of the difficulties with trying to mitigated any environmental effects upon the sustainability of life on Earth, that we could realistically solve an earth destroying problem posed by an asteroid. Interesting things to ponder, but we may all be the next dinosaurs. Maybe it is a good idea to consider a second home on Mars until things blow over.
Ann Seven
Ann Seven 16 日 前
I heard that there's something being tested later this year that might deal with the asteroid problem. BTW, concerning the aluminum foil issue, have you considered shooting little aluminum drills at the asteroid?
Yewstew
Yewstew 8 ヶ月 前
I like how the guy casually walks into his living room with the heart of a 4.5 billion year old planet
hairyviper
hairyviper ヶ月 前
In the end of the day it's just a rock
rjjitzu
rjjitzu ヶ月 前
put a supreme sticker on it
Yewstew
Yewstew ヶ月 前
@Zelmerlow Yeah, but he owns a piece of the heart
I support a free & stable Afghanistan
@イーサン a true Chad
Zelmerlow
Zelmerlow ヶ月 前
You're literally walking on a 4.5 billion year old planet every single day
Nofarewell
Nofarewell ヶ月 前
The best video I've seen so far on asteroids and their affects. Worth every seconds, well done!
Omevoc
Omevoc 19 日 前
Since tons of animals managed to survive chicxulub, has there been any research in how that would work for us humans if we tried to hide in deep tunnels or underwater through various means?
Atomic Batteries To Power
yes, it's called ancient history. This has happened many times.
Keith Kennedy
Keith Kennedy 13 日 前
Humans are toast….
Cyclist Pete
Cyclist Pete ヶ月 前
I sure love adding to my list of things out of my control to worry about. Thank you!
Gorilla Pimp
Gorilla Pimp 8 日 前
Despite what your mommy tells you, safety has always been an illusion
James J
James J 24 日 前
Maybe you could stop riding bicycles on the road and give motorists one less thing to worry about?
Nick
Nick 2 ヶ月 前
Can we use radar to detect asteroids? Ik this idea has been thought of , but if we can detect signals as small as 10^-16 watts ( voyager 2) and which is 11.7 billion miles away from earth, and if asteroids reflect back 15% of light , why can't we just use the faintest signals that reflect back to detect them ?
Pavel
Pavel 2 ヶ月 前
It reminded me about the radar equation. The received signal strength diminishes with 4th power - inverse square law is applied twice, once when sent and then a second time when reflected.
Ballsack69
Ballsack69 2 ヶ月 前
Because we know exactly where Voyager is, and it sends out specific wavelengths that perhaps aren't very common naturally. If we were gonna try to find Voyager 1 now without knowing its location we would never ever be able to.
San Kang
San Kang 2 ヶ月 前
We already do that
Pavel
Pavel 2 ヶ月 前
You are late to the party. Read about NEOs mapped by Arecibo and other radio telescopes. Detecting visible light is far easier and faster.
Clark Alarcon
Clark Alarcon 6 ヶ月 前
Honestly, I don't think we need an asteroid's help to get humans extinct, I think we're doing good enough ourselves.
Tanvi
Tanvi ヶ月 前
literally duh.
DazedAlligator
DazedAlligator ヶ月 前
We're doing such a great job going extinct that our population has skyrocketed astronomically in the last 200 years, and keeps rising. Damn we're nearly dead
riverseed
riverseed ヶ月 前
@Rakobaron "Thats such an outdated point of view" ...the Doomsday Clock has been set to 100 seconds before midnight since 2020.
socalcraigster
socalcraigster ヶ月 前
6-8 billion humans
Nicko V
Nicko V ヶ月 前
Yes climate change
Nathanael Samaroo
Speaking about ways to move asteroids, could a "space hook" or "space slingshot" have any affect on it. The general idea is you send a spinning... hook.. into space, and when it reaches the asteroid, it'd hold the asteroid, but because it's spinning, it would gently kind of ease the asteroid in another direction. It would effectively use the asteroids own speed and mass to change its direction. The biggest issue I can see with something like that, other that how on earth would we make that, is that it would require a mass relatively similar to the asteroid in question, in order to change its position, otherwise it just becomes a spinning rod of doom.
Anonydun 82fgoog
Anonydun 82fgoog 24 日 前
" is that it would require a mass relatively similar to the asteroid in question" yeah there's always that minor caveat in all the "lets move the giant rock that masses millions/trillions of tonnes" scenarios. The masses/energies/fuel involved are huge. You are literally trying to make a mountain move, even if just a little bit. I'm expecting the upcoming DART mission to be a disappointment. We just can't move something that big, it's a question of scale. Like an ant trying to move a tree, we're just the wrong size.
Anthony Barker
Anthony Barker ヶ月 前
The angle of entry is also a big factor with regards to damage. They seem to do a lot less damage when they don't hit the ground or are traveling at lower speeds.
JolliBliss
JolliBliss 20 日 前
Derek Alexander Muller is an Australian-Canadian science communicator, filmmaker, television personality and inventor, who is best known for his JPvid channel Veritasium. Muller has also appeared as a correspondent on the Netflix web series Bill Nye Saves the World since 2017.
BODHI ENGLISH
BODHI ENGLISH 2 ヶ月 前
Well-explained. Good presentation and clear animation. Thank you.
Rick
Rick ヶ月 前
We have really good laser technology and also really good drone tech. So if the can figure out a way to use high powered lasers to either push or destroy an astroid they could combine that with a drone that could be launched into space and just orbit the earth like a satellite untill needed and maybe by the time it is needed we would have enough of them up there to actually make a difference.
Jason Rist
Jason Rist ヶ月 前
The Winslow, Arizona [Barrington] impact may have been responsible for most of the large fauna in North America's extinction, including the ancestor to the horse.
Chris Jones
Chris Jones ヶ月 前
how big, or at what angle would an asteroid have to be in order to alter our spin or orbit?
Stymie Williams
Stymie Williams ヶ月 前
There's no way we can totally prepare for these things. We just have to take our chances that we'll somehow be lucky.
epicasspilotGTA5
epicasspilotGTA5 5 ヶ月 前
A wise man once said "Don’t worry about a thing, 'Cause every little thing, is gonna be alright."
cassim mandlazi
cassim mandlazi 2 ヶ月 前
That's why I also choose not to worry.
Veteran PG3D
Veteran PG3D 5 ヶ月 前
@flameodeX Seriously? Lmfao smh that makes no sense! “Avengers” aren’t a wise man it’s a stupid Hero Movie
epicasspilotGTA5
epicasspilotGTA5 5 ヶ月 前
@Tenseigod bob marley
Tenseigod
Tenseigod 5 ヶ月 前
Is that a jojo reference?
Benjamin Hancock
Benjamin Hancock 5 ヶ月 前
@ABHIJAY LEKHRAJ hey dont fuss it bro you're not stupid no worries 😊👍
O'Neirda Ath Naram
03:41 let me flabbergasted: Here walks in this gentleman kind of very casually and turns in his hands a meteorite almost as old as the earth. That thing must be very precious, doesn't it?
Martin Wettig
Martin Wettig 2 ヶ月 前
"Now, if you're concerned about the world ending in an asteroid impact, let me set your mind at ease. There are many other potential global catastrophes summarized in this map of doom..." Yeah, that didn't help, Derek.
PYROMOTIVE
PYROMOTIVE 2 ヶ月 前
I feel like society is far less concerned with astroids than they should be. NASA says non of the one's they've identified are headed to earth, but i'm more concerned about the one's they havn’t identified yet... Especially if there's one that comes from the line of the sun like Chelyabinsk, it'll be terribly hard to see and will surprise us just as Chelyabinsk did.
PYROMOTIVE
PYROMOTIVE 15 日 前
@Rik77 There's those problems that are relevant for our life times and the next few generations, but there is also the issue of maintaining the human race for the next thousands of years which is more important to me personally. Small asteroids can do heavy damage as it only takes one 10-15km in diameter to wipe out the dinosaurs. If we're gonna roll our dice with this issue, then i'd at least prefer us to have a separate colony on mars or something incase the worst happens. I agree it's pricey and depends on if you value short or long term priorities but it's worth it in my opinion.
Rik77
Rik77 15 日 前
But if theres little anyone can do about it, then what would be the point spending millions trying to identify small potential asteroids. There are much bigger threats to the world worth investing in a solution.
Jim Parsons
Jim Parsons ヶ月 前
A follow-up on my previous entry about aluminum foil: I would guess that asteroids might reflect light on their own account... maybe not like aluminum foil... but there might be some reflection. There are a lot of variables, but might a reflective sun-shade between the sun and the orbiting body, might have a similar effect? Might be tricky as there are a lot of variables. I wonder if those that can do code computer simulating games could make one that might simulate the above described experiment? Might be interesting.
notstarboard
notstarboard 29 日 前
5:20 They mentioned in this video that asteroids reflect about 15% of the light that hits them. Aluminum foil looks like it's ~85% from a quick internet search.
B Phoenix
B Phoenix 年 前
Veritasium's videos now have better production than most documentaries i watched as a kid (and are more informative)!
Srinivasulu Kapuluru
@Fun and Adventure tour drop drop
landil Bejamin
landil Bejamin 3 ヶ月 前
GHUB 8
Srinivasulu Kapuluru
@Fun and Adventure tour stops parking garage
Srinivasulu Kapuluru
@Fun and Adventure tour stops parking
Srinivasulu Kapuluru
@Fun and Adventure tour tour stops breathing
Lifeless
Lifeless 3 日 前
This far out part of the visible universe is so well organised that a large enough impact is so improbable - It can never happen. again. those objects are already where they belong.
Dean Smith
Dean Smith ヶ月 前
To suggest that the MASS of the Eiffel Tower is of some extraordinary measure is in direct contradiction to one of the tower's many design points, namely that the tower itself requires little mass--it was built to demonstrate the strength of French steel and engineering. The mass of air within the boundaries of the tower is greater than the mass of steel.
Pete Z.
Pete Z. 12 日 前
This is a very real and very important threat. We are the only species on Earth that can actually do something about it that has ever existed. We need to get a handle on this! Hopefully some of us find a way to live on Mars so one single strike doesn't take us ALL out. It would be as if we never existed at all.
Kyle Monday
Kyle Monday 日 前
If a meteorite impact causes that much heat and energy, then where is the glass or slag that should accompany a crater? Could it be that instead of the meteorite having been vaporized that it was already mined by an ancient culture?
Bluelijah04
Bluelijah04 7 ヶ月 前
This scientist is such a legend. He has a 4.5 billion-year-old meteorite, a men in black chair, and a t rex skull
Seltaeb
Seltaeb 2 ヶ月 前
After the Big Bang💥there formed gigantic suns then smaller suns, then planets by small pebbles that became large rocks then planets. All of this comes from stardust as does water & ultimately green stuff, animals & upright apes.
Lillies Plants & Landscapes
Do scientists lie
Khileshwar Nishad
Khileshwar Nishad 3 ヶ月 前
@Insertname .
عبود عبود
عبود عبود 3 ヶ月 前
0in
Ny Na
Ny Na 3 ヶ月 前
JUDASFINKELSTEIN
JUDASFINKELSTEIN ヶ月 前
Is there a real way to deflect these things if we had just a few days or hours of notice? Anyone know why they are all rotating. I liked the rocket deflection idea. Hate to be scary but couldn't you identify a 10km one and change its trajectory to strike a nation on purpose?
JUDASFINKELSTEIN
JUDASFINKELSTEIN 24 日 前
@Anonydun 82fgoog That is incredible. What an interaction. What a scale. Thanks.
Anonydun 82fgoog
Anonydun 82fgoog 24 日 前
They're rotating because of the conservation of angular momentum. Imagine 2 particles attracting each other through gravity. They get closer together, but unless they are perfectly lined up chances are they won't hit each other dead on and stop, but rather glance off each other, spread apart again, and repeat the process only with less energy this time. Just this process introduces a rotational force. Now multiply it many, many, many trillions of times and you get rotating asteroids, rotating planets, orbiting planets, orbiting stars and orbiting galaxies, all spinning around on their axes and around each other...
Shiltz
Shiltz 29 日 前
You could probably deflect it with enough time but that nation may be able to do it too. Also, that kind of asteroid would extinct mankind anyway so it's better to just nuke a country! (Not that I recommend nuclear warfare)
BigDaddy
BigDaddy ヶ月 前
This was super interesting... no mention though of the speed of the asteroids. Would the speed of the asteroid not change the scope of the discussion? like 100m asteroid doing 100k mph vs a 1km asteroid doing 10k mph?
Релёкс84
Релёкс84 ヶ月 前
Of course, but due to Earth's gravity the absolute minimal speed an asteroid can hit Earth hat is 11km/s or 40'000 kph, because it's the speed you get from falling all the way from space down to Earth. In practice most asteroids come at around 15km/s and rarely much faster.
MacMalo
MacMalo ヶ月 前
Don't worry, guys. If we don't end self destroying ourselves, we have 24000 rocks around Earth capable of doing that
The Open House
The Open House ヶ月 前
I said to you don’t worry guys forget about the Rocks around the Earth we are doing that with atomic bomb and been careless of our own home.
Pedro Negreiros
Pedro Negreiros ヶ月 前
I think an asteroid like the one that obliterated the dinosaurs could possibly save the earth from us.
Reece Howes
Reece Howes 10 ヶ月 前
love how at the end he like don't be worried about an asteroid killing everyone there's a million other ways we could all die and half of them are humans killing themselves
Rogue SirJoseph
Rogue SirJoseph 7 ヶ月 前
@Prima Murdock I don’t believe In nothing that man says!
Tony Lee
Tony Lee 7 ヶ月 前
You make it seem like human stupidity is to blame for humans being so close to killing themselves compared to other factors but it's because everything that has been a threat to humanity has been taken care of by humanity, and the only threat left after everything else was taken care of are the newest problems which happen to be human-made because changes caused by nature is incredibly long term compared to human made ones
DeltaModelX
DeltaModelX 8 ヶ月 前
i took what you said as a rope but that also counts
Dented
Dented 8 ヶ月 前
Humans bad aliens gud
PROBERevealer
PROBERevealer 8 ヶ月 前
@Monty So what was the gun use for ? in the end ! ;)=)
Adesor Cuppy
Adesor Cuppy 2 ヶ月 前
14:20 “and this could happen tomorrow?” “well it could, yeah!” “hahaha hahaha hahaha” “hahaha haha
spg
spg ヶ月 前
😶 ..live your lives, folks .
can you not look here
@EfkaGames&Computers they never said that tho lol
Sonic Hope
Sonic Hope ヶ月 前
*sweats*
EfkaGames&Computers
EfkaGames&Computers 2 ヶ月 前
What would you want the guy to reply with, a sorrow in his face?
M’n’ Conquer
M’n’ Conquer 16 時間 前
FINALLY! Been avoiding watching this video since it was released even after watching the click-baity explanation. The thumbnail is just too click baity but the content is just as great as all Veritasium work.
Bob516
Bob516 ヶ月 前
As always, a great video overall, but why did you use clips of space animations that had sounds of collisions?
Chris Davie
Chris Davie ヶ月 前
11:55 We're talking about human extinction from an asteroid or an asteroid-Earth collision that would potentially kill millions, which is more than likely to happen and that young cameraman is afraid of catching a virus outside in the open air with literally nobody around him. That's insane. 12:10 How do we know that isn't zero though? Isn't it probable there are asteroids in areas of space we cannot see? 12:59 I like how he didn't say "Britain". Brexit, anyone?
ZoomRR Mcgee
ZoomRR Mcgee 5 ヶ月 前
I love how there's this massive bright light in the sky that looks like a missile and everyone's just like "Yeah, Probably just another nuclear bomb."
J Smith
J Smith 日 前
Nothing but respect to the people that do this very difficult job, but the way in which we detect near earth asteroids is extremely flawed and hit or miss at best. Hopefully we can develop better, more reliable methods in the near future.
greg bonham
greg bonham ヶ月 前
14:48 - 15:22 Even if gravity pulls the pieces of the nuked asteroid back together, reforming it as a rubble pile, that rubble pile would obviously be more easily burned up upon entering the atmosphere than the original solid asteroid...
J Astier
J Astier ヶ月 前
@Jeezus Yeezus Even if you assume the surface is infinitely rough, and it burns up very quickly, that thin layer which makes up a very small portion of the total mass would then expose a flat surface again...
Jeezus Yeezus
Jeezus Yeezus ヶ月 前
@J Astier It would reform in a chaotic shape, so the edges, surface would also be messed up, thus making it easier to burn up, but still of no significance I guess.
J Astier
J Astier ヶ月 前
Well no, because if it reforms into a rubble pile again, the surface area exposed to air to burn up wouldn’t change.
almond cookie fanclub
thank you for the list of stuff to be paranoid about! this really helped my mental health
marvin maali
marvin maali ヶ月 前
The asteroid impact animation is the best. Like the way it blows out the land like it is water, so cool.
Puzzle Fighter
Puzzle Fighter 15 時間 前
Why would the pieces of an exploded rubble pile move away slowly and get pulled back into each other rapidly enough to have essentially done nothing? And if we really could hit it with one...couldn't we hit it with more than one and/or successive strikes to disperse the tending-to-reform rubble pile such that each smaller piece that impacts may not be as bad as the whole?
ken francis
ken francis ヶ月 前
30 years ago our father brought his young adult sons to a baseball game. The ball shot high into the air, fast at first, then slowing down seeming to almost hang still in the air. How strange I thought to myself. What happened next......anyway the asteroids that streak across the constellations are NOT the ones we need to pay attention to. I never lived it down.
Tom Decuca
Tom Decuca ヶ月 前
Anything can happen and change the direction of these things. Having one of these taking out a city is pretty easy.
David
David 27 日 前
Watching this after the "Don't look up" movie, I'm convinced the hardest part will actually be dealing with people.
Anonydun 82fgoog
Anonydun 82fgoog 24 日 前
Kind of like dealing with bratty people on a flight, except the Earth is the plane and we're all passengers...
Ato Neikha
Ato Neikha 年 前
Props to the camera man for risking his life to capture these dangerous objects in space.
KyD
KyD ヶ月 前
i wonder if the asteroids in the main asteroid belt could eventually collect together and make a new planet in our solar system
Kenny Juengel
Kenny Juengel ヶ月 前
Question.. A direct hit bombing wouldn't work. What would the affect of a chain of proximity blasts do? Could it push the asteroid off it's path?
Kenny Juengel
Kenny Juengel ヶ月 前
Question.. A direct hit bombing wouldn't work. What would the affect of a chain of proximity blasts do? Could it push the asteroid off it's path?
Molla Nafim Muthaki
Thanks for making this kinda informative videos for us
Se Google Nutzer
"let me set your minds at ease: there are many other potential global catastrophes" Thanks.
valar
valar ヶ月 前
I believe he was quoting Nietzch.e
Anak Network
Anak Network ヶ月 前
his favorite is obliterating France and Germany
God Is void
God Is void 2 ヶ月 前
This comment section is quite interesting. Some people need to realize, howe reality works. Anything think near imaginable can happen at any literal time. Always have that expectation.
Scott Belcher
Scott Belcher 2 ヶ月 前
Yah like Biden, we doomed!
Riel_
Riel_ 2 ヶ月 前
👍👍
Allan Lees
Allan Lees 2 ヶ月 前
So basically a mid-sized asteroid would do as much damage as we're doing to the Amazon rainforest, or the Malaysian rainforest, or the rainforest of Borneo, or.... In other words, Hawking was rather obtuse in thinking that it would be an asteroid that would wipe out huge numbers of species in an extinction event. We don't need an asteroid; we're doing it all by ourselves.
Ballsack69
Ballsack69 2 ヶ月 前
To be fair, we usually tend to not wipe out our own cities, which an asteroid could do.
Macht
Macht 2 ヶ月 前
What about interstellar asteroids.. we didn’t even know Oumuamua came our way until it passed us. I think those would be the biggest threat.
Pavel
Pavel ヶ月 前
True, but I meant there are many near-Earth objects that cross the orbit regularly every year. At this time, we know there are no major impactors threatening the Earth in the next 100 years, but they are far more likely than a random object from the Kuiper belt or Oort cloud. That is not to say, this will never happen.
j c
j c 2 ヶ月 前
we just knew they exited so there is no scale by which to judge thier frequency
j c
j c 2 ヶ月 前
@Pavel lool only takes 1 lolol
Pavel
Pavel 2 ヶ月 前
No, too infrequent.
Mikaella Chiriboga
And what about if some asteroid strikes in the ocean? We could imagine the blast on almost all coasts, they would be razed and change the entire map
Krish Agarwal
Krish Agarwal 2 ヶ月 前
What if we make underground bunkers for every city with different entry points, which is deep enough to avoid the impact, like said in the video that the creatures that lived in tunnels had a higher chance of surviving, so the bunker can be safe and with enough entry points it can be easier to access, and only the government can open the entries to the bunkers?
Sciencer scientifico
Or if we could afford it, have rotating space stations or lunar colonies where people could live until the fallout from the asteroid impact was largely gone.
Ballsack69
Ballsack69 2 ヶ月 前
Too expensive, capitalism would never allow it
Reekdolo123 Reekdolo123
We'd have to cooperate with hostile nations
Nathankosie
Nathankosie 2 ヶ月 前
But what if we dont know how big the crater will e
Anton Ego
Anton Ego 年 前
Scientists: if an asteroid approaches there’s nothing we can do 2020: *you have my attention*
Wolfy
Wolfy 年 前
2020: *let's end this year with a bang*
T Brown
T Brown 年 前
Maybe this will get your attention. Space is fake. globeterminator.com/no-vacuum-of-space/
Scribe13
Scribe13 年 前
jpvid.net/video/%E3%83%93%E3%83%87%E3%82%AA-rBIVIqkaqA0.html
Neelam Verma
Neelam Verma 年 前
2020: Christmas presents
Captain Simp Chimp
Can we all talk about how smooth that sponsor transition was?
Ed Paul
Ed Paul ヶ月 前
What happens if a big enough asteroid destroys the entire moon?
Kyle Wendland
Kyle Wendland ヶ月 前
What if we were able to launch an object to an incoming asteroid to knock it off its trajectory before hitting earth
Shrey Aggarwal
Shrey Aggarwal 2 ヶ月 前
This guy is the coolest science nerd i have ever seen ,he can scare off bullies with the t rex head 😂
SpagettiOsMeatballThief
What an amazing professor, I envy the the students that have had the opportunity to attend his lecture.
B-Ri
B-Ri 8 ヶ月 前
Very enjoyable to listen to.
iluvdissheet
iluvdissheet 9 ヶ月 前
@Jeff Carter i think its in the description.
Jeff Carter
Jeff Carter 9 ヶ月 前
Does anyone know the professor's name?
SpagettiOsMeatballThief
@Jarko ¿ Aww hey you should be excited! The fact that you are doing somthing says alot, it's not easy, or cheap you've got that right. I've seen alot of people decide to just take the easy way, and spend their time and energy and money on crazy things. But whatever makes them happy I guess.
Jarko ¿
Jarko ¿ 10 ヶ月 前
@SpagettiOsMeatballThief medical billing&coding. Not something I ever once thought about until recently. And I don't feel exciting giving that answer. I needed to invest in something that will provide. And work around the way things are. I made a choice I was going to start with something with more opportunity for growth in a at home flexible setting. It's a start. Never have I ever would have guessed the cost. But I'm in to deep now l. Ha.
Rounder One
Rounder One 2 ヶ月 前
I'm surprised that Veritasium would show computer graphics simulations of objects in space colliding with each other with sounds of an explosion.
roaoliph
roaoliph 2 ヶ月 前
I get a very strong feeling I'm not going to get my zombie apocalypse, out the giant meteor impact I voted for.
Rave
Rave ヶ月 前
Lmaoo
Maryj
Maryj 2 ヶ月 前
…and I might not live long enough to collect social security… 😂
Robert T
Robert T 2 ヶ月 前
Swarms of drones, each with their own ion engine -- these drones fly to earth's lagrange points, swarm small asteroids there, move them into a high Earth orbit. Thus over time, they assemble a large, high orbit, high mass impactor we can sling at an incoming impactor.
Jamison Jarosz
Jamison Jarosz 2 ヶ月 前
CIA OPEN UP
Jay Gee
Jay Gee ヶ月 前
Barringer crater is an awesome sight to see. The way they have it set up in the building on the rim is that you walk around a corner and then you get to see it. It almost doesn't seem real.
zoomzoom885
zoomzoom885 2 ヶ月 前
When I see our planet from these vids I get home sick and panic that one day we will all be wiped out,these asteroids are dangerous. We should all be kind to each other we never know when we’re gonna get boom no more earth. Love and appreciate what we have water sun food, help each other when we can cuz we might not be here next week cuz of these asteroids. I love my planet earth
Live Love Life
Live Love Life 2 ヶ月 前
This guy holding a core of a different planet from far away scars me so much. Just thinking that these meteors destroy life on planets and deliver the debris to other planets
pretzels713
pretzels713 ヶ月 前
Not from far away, from a long time ago in our Solar System
GodlessReason
GodlessReason ヶ月 前
What about hitting an asteroid with a probe to deflect it?
Sami Elkhayri
Sami Elkhayri 3 日 前
"Don't Look Up" seems to have made a pretty accurate depiction of what would happen were we to detect an asteroid large enough to cause major damage to earth.
CuriouStan
CuriouStan 日 前
I like how they have no idea what asteroids are coming from the Dark side of the Sun, but yet they know for sure we won't experience anything for 100 million years. Science 🤓☝️
Michael Eliot
Michael Eliot ヶ月 前
There is a way to deflect an asteroid: gravity steering. You put a heavy weight off to one side of the asteroid and gravity will attract them together. The satellite-weight has thrusters on it that keep it in place and thus draw the asteroid towards it. A very small angle change in space adds up to huge trajectory changes long term. So it's a matter of how much time you have. A more emergency measure is the laser idea, hitting the side of it and vaporizing it, using the asteroid's own material as the mass ejection to create thrust.
Isaic02
Isaic02 ヶ月 前
You would have to be able to control a MUCH larger object than the asteroid you want to deflect. Not to mention getting such an object in position in time to affect it.
Billy Pilgrim
Billy Pilgrim 11 時間 前
Had s great time laughing through your video about impact possibility but I somewhat disagree with your expert about whether we could or could not prevent an impact if we knew it was coming? So if you want to know more about it just call me on the Facebook call line in message's
tekiitou
tekiitou 27 日 前
i love how in the beginning there’s a literal asteroid hitting earth and the people on the crosswalk don’t even turn their heads
Victor
Victor 年 前
"If you're worried about this terrible thing, here are thousands of other terrible things"
Darren Hartell
Darren Hartell 2 ヶ月 前
Yep one other thing I know is worse, the worst thing on this planet, POLITICIANS
🌟 Yuling Cui 🌟
@YourLocalCommunist that’s not Elon
Frankie Woffinden
Frankie Woffinden 3 ヶ月 前
Scared I mean
Frankie Woffinden
Frankie Woffinden 3 ヶ月 前
I’m only nine but it’s interesting and asteroids ☄️ are not in engaland usually at all also don’t say I’m to young I’m NOT scraped
Hani Playz
Hani Playz 3 ヶ月 前
@Elon Musk yessir
Emmett G
Emmett G 2 ヶ月 前
What about comets? Objects with very low albedo? I like the book Magicians of the Gods, where the author speculates based on ancient carvings that a 30km comet passed nearby earth around 15000 years ago. The comet annihilated the global pre-history civilization because flakes of the comet broke off and exploded in the air or hit glaciers causing them to melt which created the great flood common in myths and religions around the globe.
SCP Declasified
SCP Declasified 2 ヶ月 前
14:10 but i think it couldn’t be a massive explosion beacuse an asteroid before impacting it makes smaller beacuse of his velocity and it makes smaller, it’ll make a very big explosion but not the same if it didn’t evaporates before impacting
Obanai Iguro
Obanai Iguro 2 ヶ月 前
Yes
Pizza Goblin
Pizza Goblin ヶ月 前
Wait but.... if you cant detect asteroids coming from behind the sun, how do they know there isnt a 10 km asteroid gonna come at us out of the sun like Jerry?
KC TRUTH SEEKER
KC TRUTH SEEKER ヶ月 前
What about something that comes from outside of our identification Zone something moving at damn near triple any speed we've ever seen? When You think about it that way along with Infinite Space is your odds aren't so good anymore
bushputz
bushputz ヶ月 前
What could we do if we saw an asteroid coming that could wipe out all life on earth? Well, for starters, I'd call in sick...
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