Barack Obama said the next step is to "reach beyond the bounds of Earth's orbit." (File)
President Barack Obama says the United States is partnering with commercial companies to build "new habitats" to try to send humans safely to Mars within two decades.
Obama set a goal in 2010 to send humans to Mars by the 2030s. He says the next step is to "reach beyond the bounds of Earth's orbit." Obama says the US is collaborating on missions that will help scientists understand how long humans can live "far from Earth."
He writes in an op-ed on CNN's website that the ultimate goal is for humans eventually to stay on Mars "for an extended time."
Obama is not elaborating on what it will cost or how the US will pay for it. But he says it will require years of patience, testing and education.
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