Engineered by Paul Fisher in 1965 , the Space Pen ’s sealed , pressurise cartridge allow ink to flow to its roller ball at any angle or in zero gravity . spaceman carried Fisher ’s AG-7 Space Pen with themstarting with Apollo 7 in 1968 . In 1969 , the AG-7 was on board when Buzz Aldrin used a pen to activate a broken circuit breaker that helped keep in line the master engines for lifting off the moon ’s open . American consumer in the grip of space fever could purchase the penitentiary that wrote upside down for $ 3.95 ( about $ 22.00 today ) , an excellent deal give its advertised 100 - year shelf life . Today , that promise is gone andthe pen costs $ 30.00 , perhaps a modest price for its place in history . Too bad Buzz Aldrinlater described the heroic penas “ felt - tipped . ”
Space
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