He has expressed his interest in someday traveling to the planet, stating "I'd like to die on Mars, just not on impact".[54] A rocket every two years or so could provide a base for the people arriving in 2025 after a launch in 2024.[55][56] According to Steve Jurvetson, Musk believes that by 2035 at the latest, there will be thousands of rockets flying a million people to Mars, in order to enable a self-sustaining human colony.[57]