When NASA first started sending up astronauts, they quicklly 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.

Enjoy paying your taxesthey're due again, soon.