When NASA first started sending up astronauts, they quickly
discovered
that ball-point 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, on almost any surface
including glass and at temperatures ranging from below freezing to
over 300 C.
The Russians used a pencil.
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:laugh: :xyxthumbs
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