Elon Musk's SpaceX aims to send humans to Mars to establish a self-sustaining colony, ensuring humanity's future beyond Earth. The plan relies on reusable Starship spacecraft, with uncrewed missions starting around 2026 and crewed missions possibly beginning in 2029. Musk envisions sending up to a million people using about 1,000 Starships by 2050, producing fuel on Mars from local resources, and building habitats. The program has garnered both support for its survival and progress potential, and criticism over ethical, environmental, and legal issues.