cold fjord writes "This might be useful. From CNN: 'Recent evidence from NASA's Curiosity rover mission to the Red Planet has revealed that astronauts on the round-trip would be exposed to high levels of radiation from cosmic rays and high-energy particles from the sun ... this would clearly be bad for your health — and it is proving difficult to find a solution. ... [S]hielding to completely block the radiation danger would have to be "meters thick" and too heavy to be used aboard a spacecraft. In contrast, ... science fiction fans have once again got used to the ease with which Captain Kirk gives the order for "shields up" and the crew of the Enterprise being protected instantly from the hostility of space. Perhaps though, a real Star Trek shield may no longer be science fiction — scientists at the UK's Rutherford Appleton Laboratory (RAL) certainly think so. They have been testing a lightweight system to protect astronauts and spacecraft components from harmful radiation and working with colleagues in America to design a concept spaceship called Discovery that could take astronauts to the Moon or Mars. "Star Trek has great ideas — they just don't have to build it," said Ruth Bamford, lead researcher for the deflector shield project at RAL. ... The RAL plan is to create an environment around the spacecraft that mimics the Earth's magnetic field and recreates the protection we enjoy on the ground — they call it a mini magnetosphere." Related: 'Deflector Shields' protect the Lunar Surface.'"
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