SpaceX's Starship Rocket Launches Successfully.

SpaceX is set to launch its Starship prototype rocket, the tallest and most powerful rocket ever built, from its test site in Texas as early as Monday morning. The rocket is designed to be entirely reusable, with the Super Heavy booster landing like SpaceX's smaller Falcon 9 rockets and Starship returning from space belly-flopping through the atmosphere before pivoting to a vertical position for landing. The spacecraft for Monday's flight will crash in the ocean and sink, but the data will enable engineers to fix what does not work and make improvements.