These are the asteroids to worry about

6 907 920 Näkymät

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
For other potential world ending catastrophes, check out Domain of Science:
Special thanks to:
Prof. Dave Jewitt from UCLA Earth, Planetary, and Space Sciences
Prof. Mark Boslough from Sandia National Labs
Scott Manley:
Ryan Wyatt at Morrison Planetarium
Prof. Amy Mainzer
Alexandr Ivanov for the opening shot of Chelyabinsk Meteor
Maps of Asteroid Impacts
Time passing animation from Universe Sandbox -
Opposition Effect -
Belskaya, I. N., & Shevchenko, V. G. (2000). Opposition effect of asteroids. Icarus, 147(1), 94-105.
Potentially Hazardous Asteroids -
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 -
Population Vulnerability -
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 -
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 -
National Research Council Report-
Board, S. S., & National Research Council. (2010). Defending planet earth: Near-Earth-Object surveys and hazard mitigation strategies. National Academies Press.
Tug Boat -
Schweickart, R. L., Lu, E. T., Hut, P., & Chapman, C. R. (2003). The asteroid tugboat. Scientific American, 289(5), 54-61.
Gravity Tractor 1 -
Lu, E. T., & Love, S. G. (2005). Gravitational tractor for towing asteroids. Nature, 438(7065), 177-178.
Laser Ablation -
Thiry, N., & Vasile, M. (2014). Recent advances in laser ablation modelling for asteroid deflection methods. SPIE Optical Engineering+ Applications, 922608-922608.
Yarakovsky Effect -
DART Mission -
Nuclear 1 -
Ahrens, T. J., & Harris, A. W. (1992). Deflection and fragmentation of near-Earth asteroids. Nature, 360(6403), 429-433.
Nuclear 2 -
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 "Stellar Dance" "Orbit" "That Notebook" "What We Discovered" "Out of Poppies" "Handwriting"
Images and video supplied by Getty Images

  • I learnt more from this than school for 10 years.

    RobloyRobloy2 tuntia sitten
  • Great video, but what about astroids from outside of the solar system, which are quite fast and hard to detect? This adds another chance, very small but they have a lot of energy.

    SevDevSevDev7 tuntia sitten
  • Good so far (half-through) but only the non-avian dinosaurs got wiped out.

    SevDevSevDev7 tuntia sitten
  • Rocks and dust clumped together 4.5 billion years ago? 😂 Where did the rocks and dust cone from? In the beginning God created the heavens and the Earth.

    Chris YarzabChris Yarzab10 tuntia sitten
  • So we can't blow up an asteroid but what if instead of detonating a bomb on it we instead detonated multiple bombs close to it so the shockwave pushes it off course

    drago lightdrago light13 tuntia sitten
  • I'm no worried because all these asteroids happens only in Russia or USA like on the movies

    Traceur BulletTraceur Bullet14 tuntia sitten
  • Why do you think we haven't been contacted by aliens once a species becomes intelligent and technologically advanced they most likely destroy themselves or get wiped out by some space rock

    motorsport_maniacmotorsport_maniac14 tuntia sitten
  • The truthful creditor pivotally smell because married compellingly scold after a strange chin. fallacious, breakable argentina

    robin wenttrobin wentt20 tuntia sitten
  • Here's a way that a nuclear device can prevent the asteroid smashing into the earth: the device is detonated when the asteroid is just close enough to impact so that it doesn't have enough time to re-coalesce before arrival time.

    Stephen MorrellStephen Morrell20 tuntia sitten
  • Looking forward to NASA DART Mission ....

    CascitoCascito21 tunti sitten
  • Well first off if a big astroid would come to earth we would probably get some nukes to try to blow the astroid up so if it comes down to earth it would just burn up in the atmosphere

    Gina AlemanGina Aleman21 tunti sitten
  • 5:16 "20m, roughly the width of 2 school buses." Where in the world do you have 10m wide school buses? :-p

    Steen PedersenSteen Pedersen22 tuntia sitten
  • Thanks for sharing with us 👍🏼

    Everton BarbosaEverton BarbosaPäivä sitten
  • It's kinda scary if you think about it, we basically can just hope that no asteroid will hit you.

    Florian EFlorian EPäivä sitten
  • He looks like elon musk

    boi georgeboi georgePäivä sitten
  • My life is a lie. I thought Nuking is the solution, just like what the guys in Armageddon did.

    Jack HandMaJack HandMaPäivä sitten
  • Why almost all prof i seen must be half bald hair?🤔

    The Random Guys {LarY}The Random Guys {LarY}Päivä sitten
  • this was posted on my birthday

    therichkid_kingtherichkid_kingPäivä sitten
  • I got an ad earth be exploding

    Ur already dead LolUr already dead LolPäivä sitten
  • Russia also got hit by Tunguska. That's because they cover so much of the Northern Hemisphere in a civilized area.

    Jim MooneyJim MooneyPäivä sitten
  • And 2020 had more space rock impacts than ever.

    Jim MooneyJim MooneyPäivä sitten
  • that model of planet formation has been around since I studied Astronomy in 1969 and it needs revision. There are way to many papers written on how the process described here just could not work like that. So, bombing it may not be as bad an idea as that. First, the gravity would be very week with objects that size. Not all the material would gather back together. Even if most did, they would not be cemented together. As he said a rubble pile. Upon entry of the atmosphere they would separate easily, and each piece would suffer the effects of friction separately, and you would have pieces of considerably less mass upon impact. Gotta get that bomb to do some pretty significant pulverizing though.

    Futterman FarmsFutterman FarmsPäivä sitten
  • Hey I’m a kid that happened when I was three days born

    bobn218bobn218Päivä sitten
  • what if a 10 kilomitre asteroid hits in the midlel of the osean????

    SiriusSirius2 päivää sitten
  • To busy, To greedy, to do something about the asteroids to busy taking money from the mayor of Moscow's wife ore the chines

    david mainorddavid mainord2 päivää sitten
  • poor dinosaurs

    Snips06_Snips06_2 päivää sitten
  • His dad

    Alexander TchourbanovAlexander Tchourbanov2 päivää sitten
  • I’m here because I had a dream last night that central Africa got hit by an asteroid but I could feel it in Canada and it was totally exaggerated cuz the earth started spinning faster and I could see the light from the explosion and it felt like we were knocked off earths orbit. It was literally the scariest dream I’ve ever had so now I’m obsessing about it

    koen Armstrongkoen Armstrong2 päivää sitten
    • Lol😂

      Aryan Marota 10th DAryan Marota 10th D6 tuntia sitten
  • You need to read the Bible son!!! You are confused! Repent Be baptized everyone of you in the name of the Lord Jesus Christ for the remission of sins and ye shall receive the Holy Ghost. Acts 2:38

    Sir MilesSir Miles3 päivää sitten
  • What agplens if there is a asteroid that could end life Me who just watched salvation: Idk ma could be a HuMiNg BiRd

    Adrian FuentesAdrian Fuentes3 päivää sitten
  • There's a major part left out, the reason the Barringer event was so devastating, given it's small size, was BECAUSE it was iron. Had it been a stony rubble pile, there would be nothing there today. Quite a difference. So a city-sized or 800m iron meteor would be enough to cause the deaths of half the planet by the time all damage from nuclear winter, economic (imagine a Great Depression x4 in depth and world-wide), starvation, disease, etc, is factored in.

    Zane HoveyZane Hovey3 päivää sitten

    Rakha ZackyRakha Zacky3 päivää sitten
  • Is the biggest meteor 1 Ceres?

    VOIDVOID3 päivää sitten

    John LevitteJohn Levitte3 päivää sitten
  • Alright guys. We are moving underwater.

    join the fist 10join the fist 103 päivää sitten
  • Shalom, I Will Have To Differ With You, On How Planets Are Formed. I Am Not A Scientist, But I See Planets As "Debris" From The Sun. Much Like Being In The Debris Trail Of A Comet. Not Enough Time To Throughly Discuss, But There Are " Oceans" Of Water In The Sun. It Is Just Too Hot , For The Molecules To Bond. Thanks For Reading, Virgin Mary Of Fatima Undercover Universe Agent For Jesus Christ The Bright And Morning Star Lucifer

    Jan TerrellJan Terrell3 päivää sitten
  • “Has it ever struck you that life is all memory, except for the one present moment that goes by you so quick you hardly catch it going?”― Tennessee Williams..

    Same Old Fit Up - Wahrheit Politische VerfolgungSame Old Fit Up - Wahrheit Politische Verfolgung3 päivää sitten
  • 1988 circulaba por tramo de autovía N 340 desde Tarragona a Barcelona cerca del barranco de Llevant en la primera ciudad,y en dirección la ermita del Loreto aprecie la caída de un aerolito. Cayó en vertical,, cómo era pleno día aprecié su masa negra,humo negro detrás de su masa y luego humo blanco,No pude ver más al tener lomas enfrente.Posiblemente cayose al mar a la altura de Roda de Bera o así.La masa que aprecie fue como la cabeza de una cerilla.Ningun comentario en prensa.

    Josep Bernet VallèsJosep Bernet Vallès3 päivää sitten
  • Približno mi poznato.!

    Petar StevanovicPetar Stevanovic3 päivää sitten
  • Yeah i don't worry about things outside of my control. I lay it on the Lord.

    EQOAnostalgiaEQOAnostalgia4 päivää sitten
  • That one moment I realise that any hundred metre meteor/asteroid would completely obliterate my entire country. Ah well, now I'm panicking.

    MasterTofu MelissaMasterTofu Melissa4 päivää sitten

    LSCB The seerLSCB The seer4 päivää sitten
    • That got dark sorry 😅😂

      LSCB The seerLSCB The seer4 päivää sitten
  • Let asteroid enjoy travel around the earth🧐

    Maria Fe BofillMaria Fe Bofill4 päivää sitten
  • Its not 2020

    marta abrammarta abram4 päivää sitten
  • Well asteroids were dangerous.. Until Flex tape came along.

    C1apifi3d GamesC1apifi3d Games4 päivää sitten

    Dan PierceDan Pierce4 päivää sitten
    • Yeah sure mate. See ya in 25 years

      J. B.J. B.4 päivää sitten
  • if dinosaurs were exterminated by such a large asteroid, where is the trace of that asteroid? I guess it must be a huge one

    george silivestrugeorge silivestru4 päivää sitten
    • Where do you think the hole between Mexico and the U.S. came from ?

      J. B.J. B.4 päivää sitten
  • I think a 10km impactor could still come from the Oort cloud, so the probability there is not really zero.

    Jakub HoláňJakub Holáň4 päivää sitten
  • Puny humans.

    Omaha Patrick A. BullockOmaha Patrick A. Bullock4 päivää sitten
  • I feel bad for dinosaur 😔😭

    Snow FlakeSnow Flake4 päivää sitten
    • Imagine if u were dinosaur

      Snow FlakeSnow Flake4 päivää sitten
  • Oh yes

    Géry PankratzGéry Pankratz5 päivää sitten
  • try a bunker the ones that where made in like 1983

    Damien Lopez-BarrazaDamien Lopez-Barraza5 päivää sitten
    • thay are for thing like nuks

      Damien Lopez-BarrazaDamien Lopez-Barraza5 päivää sitten
  • The four frail attack neuroanatomically load because celery emphatically tumble amidst a languid gold. capricious, graceful debt

    drgndstryrdrgndstryr5 päivää sitten
  • Imagine kim jong un making astreoids and using it for future wars..

    Roblox_brother157Roblox_brother1575 päivää sitten
  • E o Sincronismo? 11:12

    Vanessa VicenteVanessa Vicente5 päivää sitten
  • How about apophis

    AFS NATIONAFS NATION5 päivää sitten
  • The equable chin noteworthily connect because talk nutritionally yell concerning a lovely bongo. naughty, simple blouse

    Toni ToniToni Toni5 päivää sitten
  • How about splashing it with white paint so the sun would change its trajectory?

    Ricky FoosRicky Foos5 päivää sitten
  • My family visited the Arizona crater in 50s. We all knew and the tourist office also said that it was a meteor crater. Never heard anyone suggest it was a result of a volcano.

    Ricky FoosRicky Foos5 päivää sitten
  • I was hoping for a small up-to-date catalogue and review of asteroids such as the "Apophis" one. Didn't get one.

    olden creekolden creek5 päivää sitten
  • this is Science?

    Kent SorensenKent Sorensen5 päivää sitten
  • The orange pansy bioinformatically guide because jason nomenclaturally bake between a flaky billboard. shiny, level join

    Kasia WolskaKasia Wolska5 päivää sitten
  • Thank you...

    S AydinS Aydin5 päivää sitten
  • Title is misleading.

    redplagueredplague5 päivää sitten
  • The melted love cephalometrically flash because donald comparatively remove concerning a uptight harmonica. wry, homely fridge

    Manny NortonManny Norton5 päivää sitten
  • We could probably get diving equipment and when the asteroid hit and go in the the middle of the ocean and dive into the water (ik yall are smarter but it was my idea)

    XX_JAJUAN_XX 105XX_JAJUAN_XX 1055 päivää sitten
  • 18:28 like a Pandamic for example..

    Panda MagnumPanda Magnum5 päivää sitten
  • I don't want to die

    Leo-Han RobertLeo-Han Robert6 päivää sitten
  • imagine if mars collides into earth

    sidsid6 päivää sitten
  • But if we lonch a megnet it vill turn a astroid becou it' s iron

    Jan KadivecJan Kadivec6 päivää sitten
  • Were very lucky that even if a hundred meter meteor hit us, there is a Absolute Zero percent chance it could hit a major city

    Mine SteveMine Steve6 päivää sitten
  • I wanna see once before I die

    Ntuj Qub QabNtuj Qub Qab6 päivää sitten
  • didn't Nova use some of the footage of the chicxulub meteriorite in one of there documenturies

    MasterhandsMasterhands6 päivää sitten
  • thanks's a great project

    Shadi AbohosenShadi Abohosen6 päivää sitten
  • The cowardly sunday cosmetically nod because sailor conceptually coach astride a snobbish advice. cuddly, deserted athlete

    Pam CervantesPam Cervantes6 päivää sitten
  • But why can't other nations send missiles to hit 1-2km asteroids by tracing it's trajectory when they are closer to Earth(Like when they are just above Earth surface) It will atleast minimize the focused damge ryt? 🤔🤨🧐

    Frustrated StudentFrustrated Student7 päivää sitten
    • @Frustrated Student Possibly but it depends when we found it, how close it is, where it is going and that is IF our predictions are correct. Also it could send many small asteroids . But then again I'm not a meteorologist

      J. B.J. B.4 päivää sitten
    • @J. B. but isn't it a gud sol n ?

      Frustrated StudentFrustrated Student4 päivää sitten
    • Its not that simple

      J. B.J. B.4 päivää sitten
  • This planet can go at anytime and left remaining in the universe are trillions of other planets exactly like ours but each planet will have humans that speak different languages, wear different hair styles and clothes, and have different rock and pop bands, and different movies and videogames.

    domic domdomic dom7 päivää sitten
  • Now I want a T-Rex skull.

    Smooth MoveSmooth Move7 päivää sitten
  • You only get to live once so make the best of it we can die at any minute keep safe

    HYP3 X GAMERHYP3 X GAMER7 päivää sitten
  • So, you are telling me that the big bang took place BILLIONS of years ago, and this piece of rock/metal is part of a planet from that explosion... soooo, that little rock has been floating around the universe for BILLIONS OF YEARS?!? Your brain is fried, man.

    Alan WhiteAlan White7 päivää sitten
    • Its a rock floating in space, its not like it needs water or food to survive. Also a lot of planets collided and are colliding even now . You have your brain fried, except if I'm completely wrong which i don't think so

      J. B.J. B.4 päivää sitten
  • I love when they say "this asteroid is about 4.5 billions years old." Like they know the actual age of the rock. Not 2, not 3, not 5 billions years old...4.5. Lol.

    Gilbert GrapeGilbert Grape7 päivää sitten
    • They count the candles on its cake bruh

      Jordan CoalandzJordan Coalandz7 päivää sitten
  • Reminds me about the Colossal titan kicking a hole in the wall Imao

    mingmingarmy7006mingmingarmy70068 päivää sitten
  • If you're reading this you made it to 2021. You are blessed 🙏

    Jesse HernandezJesse Hernandez8 päivää sitten
  • Dont worry superman will save the day

    Cool MastersCool Masters8 päivää sitten
  • "There are roughly a thousand one kilometer asteroids, and they're still capable of doing a lot of damage ". Me: flex tape

    Gind gindGind gind8 päivää sitten
    • @br du what

      【Nightmare】【Nightmare】Päivä sitten
    • ███████╗██╗░░░░░███████╗██╗░░██╗  ████████╗░█████╗░██████╗░███████╗  ░█████╗░░█████╗░███╗░░██╗████████╗ ██╔════╝██║░░░░░██╔════╝╚██╗██╔╝  ╚══██╔══╝██╔══██╗██╔══██╗██╔════╝  ██╔══██╗██╔══██╗████╗░██║╚══██╔══╝ █████╗░░██║░░░░░█████╗░░░╚███╔╝░  ░░░██║░░░███████║██████╔╝█████╗░░  ██║░░╚═╝███████║██╔██╗██║░░░██║░░░ ██╔══╝░░██║░░░░░██╔══╝░░░██╔██╗░  ░░░██║░░░██╔══██║██╔═══╝░██╔══╝░░  ██║░░██╗██╔══██║██║╚████║░░░██║░░░ ██║░░░░░███████╗███████╗██╔╝╚██╗  ░░░██║░░░██║░░██║██║░░░░░███████╗  ╚█████╔╝██║░░██║██║░╚███║░░░██║░░░ ╚═╝░░░░░╚══════╝╚══════╝╚═╝░░╚═╝  ░░░╚═╝░░░╚═╝░░╚═╝╚═╝░░░░░╚══════╝  ░╚════╝░╚═╝░░╚═╝╚═╝░░╚══╝░░░╚═╝░░░ ███████╗██╗██╗░░██╗  ████████╗██╗░░██╗░█████╗░████████╗ ██╔════╝██║╚██╗██╔╝  ╚══██╔══╝██║░░██║██╔══██╗╚══██╔══╝ █████╗░░██║░╚███╔╝░  ░░░██║░░░███████║███████║░░░██║░░░ ██╔══╝░░██║░██╔██╗░  ░░░██║░░░██╔══██║██╔══██║░░░██║░░░ ██║░░░░░██║██╔╝╚██╗  ░░░██║░░░██║░░██║██║░░██║░░░██║░░░ ╚═╝░░░░░╚═╝╚═╝░░╚═╝  ░░░╚═╝░░░╚═╝░░╚═╝╚═╝░░╚═╝░░░╚═╝░░░

      br dubr du2 päivää sitten
  • I don't know why but I want to mine the sh out of these asteroids, the amount of resources must be tremendous !!

    Waldel MartellWaldel Martell8 päivää sitten
  • I'm interested in that T-Rex head! Where can I get one! ^..^~~

    recklesswhisperrecklesswhisper8 päivää sitten
  • am scared now

    Philipp MullerPhilipp Muller8 päivää sitten
  • cool

    SpaceIL12 NSpaceIL12 N8 päivää sitten
  • 14:25 "and, this could happen tomorrow?" *[softly] don't...*

    NikoNiko8 päivää sitten
  • Nuking an asteroid should not be disregarded. I believe it's the most viable approach and doing in near proximity to Earth's atmosphere would prevent the chunks from clumping back together, allowing a greater surface area of Earth's atmosphere to burn the chunks.

    Anton SAnton S8 päivää sitten
  • I feel sad when thinking about how dinosaurs would have felt back then...

    MrBeast ׂMrBeast ׂ8 päivää sitten
    • Lmao nice name.

      Mystical MangosMystical Mangos7 päivää sitten
  • Way more intense than my pocket ace asteroid video. 😳

    Greek Olives Poker ελιέςGreek Olives Poker ελιές8 päivää sitten
    • Άμα έχεις αγγλικούς τίτλους στα βίντεο είναι καλύτερο να αλλάξεις και το όνομα σου

      J. B.J. B.4 päivää sitten
  • Chee leb enz

    the Vik vidsthe Vik vids8 päivää sitten
  • Wow

    The lava kid 2.0The lava kid 2.08 päivää sitten
  • 😭😭😭😭😭🌏🌒☄️

    Eril CruzEril Cruz8 päivää sitten
  • So, basically this video and others like it, are fear mongering.. right? Maybe we all need to just dig a hole, and hide. Shut down our cars, our manufacturing, quit our jobs cause that causes all sorts of stiff and just HIDE.. right?

    enterprise59enterprise598 päivää sitten
  • Well the aphopis in 2013 didn't really hit anything

    Miekayla jealayne ValenzuelaMiekayla jealayne Valenzuela8 päivää sitten
  • Why worry about things you can’t control

    PollutedMINDSPollutedMINDS8 päivää sitten
  • The nappy passbook baly wonder because viola phylogentically tie before a ubiquitous dashboard. true, bizarre meal

    Even LuisEven Luis8 päivää sitten