When NASA first started sending up astronauts, they quickly discovered that ballpoint pens would not work in zero gravity. To combat this problem, NASA scientists spent a decade and $12 billion developing a pen that writes in zero gravity, upside down, underwater, on almost any surface including glass and at temperatures ranging from below freezing to over 300 C.
The Russians used a pencil.
2006-09-23
07:10:59
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17 answers
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asked by
postypaul
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