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Journey to Mars 'worth the risk': Nasa

It outlines challenges to sending humans to the planet but says problems are solvable, though there is no firm date for mission

LIFE ON THE RED PLANET: Astronauts who journey to Mars could spend three years in deep space, where radiation is high and so are the risks of cancer, bone loss and immune problems.


THE National Aeronautics and Space Administration (Nasa) on Thursday outlined the many challenges that remain before humans can set foot on Mars, calling the problems "solvable" but setting no firm date for an astronaut mission to the Red Planet.

Updated details of the US