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This is Scientific American 60-Second Space. I'm Clara Moskowitz. Got a minute?

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Last week NASA hailed the launch of its new Orion capsule as the first step toward sending people to Mars.

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But is a manned mission to the Red Planet really doable?

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"I liken it to the 1920's, '30's, '40's when it was believed that Everest might be impossible to climb."

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John Grunsfeld, the former astronaut who now heads NASA's Science Mission Directorate.

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We spoke at Cape Canaveral just before the Orion launch.

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"Well, eventually it was climbed by Tenzing Norgay and Sir Edmund Hilary.

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And they did this big siege approach where they had thousands of porters and they brought big camps and afternoon tea and all this kind of stuff.

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And that was kind of the Apollo approach to going to the moon and back safely in a decade.

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We brought all resources to bear.

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"But modern exploration on Earth, polar exploration, Antarctic, climbing, even climbing Mount Everest, people do it in a very light fashion using technology,

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they're very creative and they take more risks in some cases.

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And I think that's going to be our path to Mars, a much leaner path and one where we are able to use technology to enable the way, rather than a big siege approach.

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"And so I think it's very realistic.

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I think we could do it in the 2030's, certainly by the 2040's, with the national will and the interest.

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I think it's our science missions that are providing that drive."

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Thanks for the minute, for Scientific American 60-Second Space. I'm Clara Moskowitz.

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