Nasa wants to send man to Mars in 25 yrs

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Deadly radiation from the cosmos, potential vision loss, and atrophying bones are just some of the challenges scientists must overcome before any future astronaut can set foot on Mars, experts and top NASA officials said on Tuesday.





The US space agency believes it can put humans on the Red Planet within 25 years, but the technological and medical hurdles are immense. "The cost of solving those means that under current budgets, or slightly expanded budgets, it’s going to take about 25 years to solve those," said former Nasa astronaut Tom Jones, who flew on four space shuttle missions before retiring in 2001.

At an average distance of about 140 million miles (225 million kilometers), Mars poses scientific problems an order of magnitude greater than anything encountered by the Apollo lunar missions. With today’s rocket technology, it would take an astronaut up to nine months to reach Mars — the physical toll of floating that long in zero gravity would be huge.

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