The Fisher AG7 space pen was developed in 1966 and adopted by NASA for the astronauts' use in 1968. Ordinary ballpoint pens do not work in space because the ink does not flow in weightlessness. The Fisher pen's ink cartridge is pressurized and will operate in extreme environments on Earth and in space. Astronauts and cosmonauts regularly use these pens in space, and many Earth-bound customers buy them as well. Senator Jake Garn used this space pen during his flight on the STS 51-D Space Shuttle mission in 1985, and he gave it to the Museum with various other possessions after the mission.
This object is on display in Human Spaceflight at the Steven F. Udvar-Hazy Center in Chantilly, VA.