When NASA began the launch of astronauts into space, they found out that the pens wouldn’t work at zero gravity. To solve this problem, it took them 1 decade and 12 million.
They developed a pen that worked at zero gravity, upside down, underwater, in practically any surface
including crystal and in a temperature range from below freezing to over 300 degrees. So… what did the Russians do…?
They used a pencil…