SpaceX founder and CEO Elon Musk shared a 4 view look of the Falcon 9 rocket first stage landing after it launched the CRS-18 mission to the International Space Station. -- Watch SpaceX Rocket Break Sound Barrier Twice and Land in This Amazing Video: https://www.space.com/spacex-falcon-9-rocket-breaks-sound-barrier-crs-18-video.html Credit: SpaceX