NiftyWolfie Posted September 19, 2012 Share Posted September 19, 2012 When NASA first started sending up astronauts, they quickly discovered that ballpoint pens would not work in zero gravity. To combat the problem, NASA scientists spent a decade and $12 billion to develop a pen that writes in zero gravity, upside down, underwater, on almost any surface including glass and at temperatures ranging from below freezing to 300°C. The Russians used a pencil. Link to comment Share on other sites More sharing options...
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