Elon Musk-owned SpaceX will launch its first Starship to Mars in two years, with the billionaire maverick predicting the red planet to have a human-inhabited city in 20 years.
The first of these launches will be uncrewed to test the reliability of intact landing on Mars, he said.
"If those landings go well, then the first crewed flights to Mars will be in 4 years," Musk said on X, adding, flight rate will grow exponentially from there onwards.
"Being multiplanetary will vastly increase the probable lifespan of consciousness, as we will no longer have all our eggs, literally and metabolically, on one planet," he said.
SpaceX created the first fully reusable rocket stage and, and made the reuse economically viable, he said.
According to Musk, the multiplanetary life is a function of a cost per ton to Mars problem as well as technology.
"It currently costs about a billion dollars per ton of useful payload to the surface of Mars. That needs to be improved to $100k/ton to build a self-sustaining city there, so the technology needs to be 10,000 times better. Extremely difficult, but not impossible," he said, responding to a post of Bill Ackman, who called for making America "healthy" again.
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