NASA's top priority is still taking humans to Mars, and it says private companies who want to do the same don't stand a chance without its support. Administrator Charles Bolden told a US House budget committee, "our ultimate focus is the journey to Mars and everything comes back to that," adding that the agency still plans to land there by the 2030s. A manned mission to Mars is crucial because the red planet was likely habitable in the past, and scientists must find out what went wrong to prevent a similar disaster on Earth. Bolden went so far as to say that humans need to "get away from being Earth-reliant... (and) Mars is the planet that is the most like Earth."