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US man volunteers for one way flight to Mars

It is the trip of a lifetime - for a lifetime. US man Aaron Hamm has volunteered to fly one-way to Mars, despite no prospect of ever returning to earth. x

The trip is run by the Dutch Mars One project, which hopes to create a permanent community of settlers on the red planet in 2023. x

Radiation exposure is a concern, and travellers could never readjust to the Earth's gravity afterwards. But Mr Hamm is determined to take the flight. x

He told BBC Radio 5 live's Breakfast: I want to go somewhere genuinely new... and be a part of something that's really about humanity's future is something I've always wanted to do. x

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