SpaceX Starship and Super Heavy become world's tallest rocket after stacking

SpaceX Starship SN20 and Super Heavy booster 4 were stacked for the first time on Aug. 6, 2021. The massive rocket is about 395 feet (120 meters) tall. -- Elon Musk is thrilled as SpaceX's Starship becomes world's tallest rocket: https://www.space.com/elon-musk-thrilled-spacex-starship-worlds-tallest-rocket Credit: Space.com | footage courtesy: SPadre.com (https://twitter.com/SpacePadreIsle) / SpaceX / Elon Musk | edited by Steve Spaleta (http://www.twitter.com/stevespaleta)