Joke of the day – Writing in zero gravity

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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, underwater, on almost any surface including glass and at temperatures ranging from below freezing to over 300° C.

The Russians use a pencil.

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