Check out all of TED-Ed's book recommendations: http://ed.ted.com/books Check out Carrie Nugent's "Asteroid Hunters": https://shop.ed.ted.com/collections/ted-ed-book-recommendations/products/asteroid-hunters View full lesson: https://ed.ted.com/lessons/the-first-asteroid-ever-discovered-carrie-nugent Over the course of history, we’ve discovered hundreds of thousands of asteroids. But how do astronomers discover these bits of rock and metal? How many have they found? And how do they tell asteroids apart? Carrie Nugent shares the story of the very first asteroid ever discovered and explains how asteroid hunters search for these celestial bodies. Lesson by Carrie Nugent, directed by TED-Ed, animation by Reza Riahi. Check out our Patreon page here: https://www.patreon.com/teded Thank you so much to our patrons for your support! Without you this video would not be possible. Rishi Pasham, John Christian S. Ramos, Bev Millar, Merit Gamertsfelder, Lex Azevedo, Noa Shore, Taylor Hunter, Kyle Nguyen, Bijan Bayat Mokhtari, Elias Wewel, Henry Li, Ayaan Heban, Joanne Luce, Michael Aquilina, Jason A Saslow, Yansong Li, MJ Tan Mingjie, Fabio Peters, Silas Schwarz, Cristóbal Medina Moenne, Tsz Lung.