A reusable space launch system having a reusable booster, a reusable orbiter, and a reusable third vehicle. The booster and orbiter provide ascent propulsion to put the third vehicle in orbit. The booster, orbiter and third vehicle each non-destructively return to earth independently of one another. The booster, orbiter and third vehicle can be refurbished and used in another space launch system as desired. The third vehicle is either a cargo containing vehicle or a crew transfer vehicle. The crew transfer vehicle is substantially the cargo containing vehicle with a crew module in the payload bay.