ELon musk recently unveiled his plans for manned mars and moon missions . The SpaceX Starship is a fully reusable second stage and space vehicle being privately developed by SpaceX. It is being designed to be a long-duration cargo– and passenger-carrying spacecraft. While it is being used today as an independent rocket for testing, it will typically be used on orbital launches with an additional booster stage, the Super Heavy, where Starship serves as the second stage on a two-stage-to-orbit launch vehicle. Beginning in mid-2019, prototype versions are being flown with Starship as an independent rocket in its own right—without any launch vehicle booster stage at all—as part of an extensive suborbital flight testing program to get launch and landing working and iterate on a variety of design details, particularly with respect to atmospheric reentry of the vehicle.
Integrated system testing of Starship began in March 2019 with the addition of a single Raptor rocket engine to the first flight-capable propellant structure, Starhopper. Starhopper was used through August 2019 for static testing and low-altitude, low-velocity flight testing of vertical launches and landings in July/August. Two additional test articles, Starship orbital prototypes, are being built by competing teams in Texas and in Florida. They are planned to be used for high-altitude, high-velocity testing beginning in late 2019. All test articles have a 9-meter (30 ft)-diameter stainless steel hull.
SpaceX is planning to launch commercial payloads using Starship no earlier than 2021