In Slovenia's dramatically beautiful Karst region, six astronauts have been put through their paces for future missions--not in a flashy futuristic space centre but deep underground in the area's network of cold, dark and muddy caves.
In Slovenia's dramatically beautiful Karst region, six astronauts have been put through their paces for future missions--not in a flashy futuristic space centre but deep underground in the area's network of cold, dark and muddy caves.
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