Friday, January 7, 2011

Pen for zero gravity







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. >
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The Russians used a pencil.

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