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.
Enjoy paying your taxes--
they're due again.