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Obviously "it depends". For humans at present it would take weeks. We have to build the spacecraft first though.

It took "Curiosity" about 250 Earth days to get to Mars. That's about 250 x 24 hours. So that's ROUGHLY 6000 hours.

Typical expected manned earth to mars travel times are about a year and a half (each way), but this depends on the chosen trajectory and how powerful/expensive a rocket you can get. But it cannot be done in weeks, even if you took a straight-line trajectory at the exact moment (this moment occurs only once every two years) the planets made their closest approach because we don't have technology that can build that powerful a rocket.

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11y ago

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