Astronaut and chemist Dr. Don Pettit demonstrates acoustical resonance from the International Space Station using vacuum hose

Shown teaching in 1970 Norman Fitzroy Maclean (December 23, 1902 – August 2, 1990) was an American author and scholar noted for his books A River Runs Through It and Other Stories (1976) and Young Men and Fire (1992).

My new favorite video. NASA control room during touchdown of Curiosity on Mars. Go to 2:30 for the fun part.

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