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3D printed rockets save on up front tooling, enable rapid iteration, decrease part count, and facilitate radically new designs. For your chance to win 2 seats on one of the first Virgin Galactic flights to Space and support a great cause, go to https://www.omaze.com/veritasium Thanks to Tim Ellis and everyone at Relativity Space for the tour! https://www.relativityspace.com/ https://youtube.com/c/RelativitySpace Special thanks to Scott Manley for the interview and advising on aerospace engineering. Check out his channel: https://www.youtube.com/user/szyzyg ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ References: Benson, T. (2021). Rocket Parts. NASA. — https://ve42.co/RocketParts Boen, B. (2009). Winter Wonder: Rocket Icicles. NASA. — https://ve42.co/EngineIcicles Hall, N. (2021). Rocket Thrust Equation. NASA. — https://ve42.co/RocketEqn Benson, T. (2021). Rocket Thrust. NASA. — https://ve42.co/RocketThrust Regenerative Cooling — https://ve42.co/RegenCooling How A Gold Bullet Almost Destroyed A Space Shuttle by Scott Manley — https://ve42.co/ManleyEngine ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ Special thanks to Patreon supporters: Burt Humburg, Blake Byers, Dumky, Mike Tung, Evgeny Skvortsov, Meekay, Ismail Öncü Usta, Paul Peijzel, Crated Comments, Anna, Mac Malkawi, Michael Schneider, Oleksii Leonov, Jim Osmun, Tyson McDowell, Ludovic Robillard, Jim buckmaster, fanime96, Juan Benet, Ruslan Khroma, Robert Blum, Richard Sundvall, Lee Redden, Vincent, Marinus Kuivenhoven, Alfred Wallace, Arjun Chakroborty, Joar Wandborg, Clayton Greenwell, Pindex, Michael Krugman, Cy 'kkm' K'Nelson, Sam Lutfi, Ron Neal ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ Written by Derek Muller, Petr Lebedev, and Emily Zhang Animation by Mike Radjabov Filmed by Derek Muller, Raquel Nuno, Trenton Oliver, and Emily Zhang Edited by Trenton Oliver SFX by Shaun Clifford Additional video supplied by Getty Images & Pond5 Produced by Derek Muller, Petr Lebedev, and Emily Zhang