At the height of the Space Race both Soviet and American astronauts faced an unforeseen challenge: taking notes when the lack of gravity rendered normal pens inoperable. The Americans reputedly "spent millions" on an advanced pressurized space pen while the Soviets—they simply brought pencils.
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Source: http://feeds.gawker.com/~r/gizmodo/full/~3/i5MKPjn8mTw/how-nasas-anti+gravity-pen-helped-put-a-man-on-the-moon
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