Elon Musk isn’t giving up his dream of reaching Mars. And over the weekend, he unveiled the spaceship prototype that he hopes will help get us there. Unlike its predecessor, the 68-foot Falcon 1, the Starship prototype measures 164-feet-tall and 30-feet in diameter. When combined with the Super Heavy, its booster stage, the full rocket will reach a height of 387 feet and will be able to carry 220,000 lbs. of cargo into orbit. Starship is just the latest addition to SpaceX’s growing lineup of reusable launch vehicles. Musk has said he feels that it is a key step in making space travel like air travel for people.