SpaceX is preparing to launch the most powerful rocket ever built as Elon Musk targets missions to the Moon and Mars.The billionaire's company is poised to conduct the 12th uncrewed test flight of its next-generation Starship rocket, the first of a newly upgraded vehicle seen as critical to pushing deeper into space.Today's launch comes just two years ahead of a planned mission to use the vehicle to carry astronauts to the Moon. A live stream of the launch will be available on the Mirror website and SpaceX's website.
