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October 19th, 2012, 19:07
Oh, I watch the Discovery channel. It's very intersting, one of my favourite TV channels.
"The insistence that we need a faster propulsion system just allows politicians to postpone a Mars mission," said Zubrin, author of the recently re-released book "The Case for Mars." Zubrin proposes a three-stage, 18-month round-trip Mars expedition that will send a crew habitat ahead of time, as well as devices to produce fuel for the return trip.
which list a total time of an expedition (including surface period) from 3 years to 1.5 years depending on fuel spent.
The 400-450 days is from Wikipedia, and it's also what I've heard repeatedly on my 40 years of following space exploration.
PS: The Mars science Laboratory carrying the Curiosity rover landed on Mars 253 days after it launch November 26, 2011
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