Gallery: How caves give astronauts a preview of life in space
Dark, isolated and largely unexplored, caves help astronauts prepare to do extra-terrestrial science.
You’re isolated, confined and enveloped in darkness. You gradually lose your sense of time. You can’t afford to lose your bearings. And then there's the risk of exposure to radioactive gas. “You have high radiation levels in the space station, ...
Posted December 15, 2015