These are the asteroids to worry about

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 https://kiwico.com/veritasium50For other potential world ending catastrophes, check out Domain of Science: https://ve42.co/DoSSpecial thanks to:Prof. Dave Jewitt from UCLA Earth, Planetary, and Space SciencesProf. Mark Boslough from Sandia National LabsScott Manley: https://www.youtube.com/user/szyzygRyan Wyatt at Morrison PlanetariumProf. Amy MainzerAlexandr Ivanov for the opening shot of Chelyabinsk MeteorMaps of Asteroid Impacts —https://ve42.co/MapTime passing animation from Universe Sandbox - http://universesandbox.com/Opposition Effect — https://ve42.co/Belskaya2000Belskaya, I. N., & Shevchenko, V. G. (2000). Opposition effect of asteroids. Icarus, 147(1), 94-105.Potentially Hazardous Asteroids — https://ve42.co/Perna2013Perna, 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 — https://ve42.co/NEOSurveyPopulation Vulnerability — https://ve42.co/Rumpf2017Rumpf, 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 — https://ve42.co/Trilling17Trilling, 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 — https://ve42.co/NEOWISENational Research Council Report— https://ve42.co/DefendingBoard, S. S., & National Research Council. (2010). Defending planet earth: Near-Earth-Object surveys and hazard mitigation strategies. National Academies Press.Tug Boat — https://ve42.co/Schweickart03Schweickart, R. L., Lu, E. T., Hut, P., & Chapman, C. R. (2003). The asteroid tugboat. Scientific American, 289(5), 54-61.Gravity Tractor 1 — https://ve42.co/Lu05Lu, E. T., & Love, S. G. (2005). Gravitational tractor for towing asteroids. Nature, 438(7065), 177-178.Laser Ablation — https://ve42.co/Thiry14Thiry, N., & Vasile, M. (2014). Recent advances in laser ablation modelling for asteroid deflection methods. SPIE Optical Engineering+ Applications, 922608-922608.Yarakovsky Effect — https://ve42.co/YaraDART Mission — https://ve42.co/DARTNuclear 1 — https://ve42.co/Ahrens92Ahrens, T. J., & Harris, A. W. (1992). Deflection and fragmentation of near-Earth asteroids. Nature, 360(6403), 429-433.Nuclear 2 — https://ve42.co/Bradley10Bradley, 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 Muller3D animations, VFX, SFX, Audio Mixing by Jonny Hyman2D animation by Ivàn TelloIntro animation by Nicolas PrattWith Filming by Raquel NunoMusic from https://epidemicsound.com "Stellar Dance" "Orbit" "That Notebook" "What We Discovered" "Out of Poppies" "Handwriting"Images and video supplied by Getty Images