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: trvid.com/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



29 Kas 2020




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Richie l
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
Just Some Guy without a Mustache
An asteroid is scary, but what's even scarier to think about, is how there could potentially be so many other things like black holes, gamma ray bursts, supernovas, etc. that can potentially wipe out life as we know it.
I have been to a meteorite crater in India, it’s overwhelmingly beautiful, but also a bit scary.
Mark O
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.
Gaming's Finest
Gaming's Finest 14 gün önce
I felt like the solutions he offered weren't super representative of the ideas we have today. I study astronomy and asteroids have ended being a point of focus for me, I even took an entire class about defending the Earth from asteroids.
Warrior Yıl önce
Hats off to the cameraman who filmed all this space stuff for us.
Artemis 7
"We're really not that good at detecting asteroids before they're going to hit us."
Tricia Vonne
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!
Leokipo 16 saatler önce
That guy was so chill talking about the devastating impacts of asteroids, so you can tell he's been researching them for a long time
Ashik Satheesh
After all these years of inventions and developments it might seem depressing to know that there really is nothing we can do to stop an asteroid from hitting the Earth or even evacuating people before it does. An ode to the fragility of human life.
Ermz 7 saatler önce
I love how much you rescued this video's performance in the algorithm with a thumbnail flip.
Clark Alarcon
Clark Alarcon Yıl önce
Honestly, I don't think we need an asteroid's help to get humans extinct, I think we're doing good enough ourselves.
Johnny Boy
“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.
The RRDon
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.
Shaun Blackman
Wouldn't a rubble pile burn up much faster than a single asteroid?
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,
Luz Rivera
Very interesting to study about asteroids. Sir, the person you interviewed is very knowledgeable about this subject. How I wish to hear from him again. Thank you so much.
Human Experience
Human Experience Yıl önce
Asteroids in a nutshell: low-probability, high consequence.
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.
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