How astronauts survive six days in the dark, humid caves of Sardinia
In short: This video explores the ESA's CAVES mission, where astronauts from five different space agencies lived in isolated, underground environments to study the psychological effects of confinement and darkness.
In September 2011, a crew of five astronauts—Tim Peake (ESA), Thomas Pesquet (ESA), Randolph Bresnik (NASA), Norishige Kanai (Japan), and Sergey Ryzhikov (Russia)—descended into unexplored caves in Sardinia. They spent six days working in a dark, humid, and confined environment with minimal privacy and limited hygiene.
The mission investigated how constant darkness and the use of artificial light affect human perception. Specifically, researchers looked at how the absence of natural daylight cues can alter sleep patterns, circadian rhythms, and the perception of both time and colour.
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Sources
- Summary by Intellect · source: CAVES 2011 mission accomplished: cave crew astronauts return to Earth
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