Something to think about...
During the heat of the space race in the 1960s, the United States National
Aeronautics and Space Administration decided it needed a ball point pen to
write in the zero gravity confines of its space capsules. After
considerable research and development, the Astronaut Pen was developed at a
cost of approximately $1 million. The pen worked and also enjoyed some
modest success as a novelty item back here on earth.
The Soviet Union, faced with the same problem, used a pencil.