0310地震雷火事名無し(dion軍)
2018/02/02(金) 15:25:15.47ID:Sj1Emtcdthey quickly discovered that ballpoint pens would not work in zero gravity.
To combat the problem,
NASA scientists spent a decade
and $12 billion to develop a pen that writes in zero gravity,
upside down, underwater, on almost any surface,
and at temperatures ranging from below freezing to 300 degrees Celsius.
The Russians used a pencil.
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