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/veritasium50 For other potential world ending catastrophes, check out Domain of Science: https://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: https://www.youtube.com/user/szyzyg Ryan Wyatt at Morrison Planetarium Prof. Amy Mainzer Alexandr Ivanov for the opening shot of Chelyabinsk Meteor Maps of Asteroid Impacts —https://ve42.co/Map Time passing animation from Universe Sandbox - http://universesandbox.com/ Opposition Effect — https://ve42.co/Belskaya2000 Belskaya, I. N., & Shevchenko, V. G. (2000). Opposition effect of asteroids. Icarus, 147(1), 94-105. Potentially Hazardous Asteroids — https://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 — https://ve42.co/NEOSurvey Population Vulnerability — https://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 — https://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 — https://ve42.co/NEOWISE National Research Council Report— https://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 — https://ve42.co/Schweickart03 Schweickart, R. L.