How do tardigrades survive the vacuum of space if metabolic processes require liquid water?
I know tardigrades enter a state called cryptobiosis where they dehydrate and essentially suspend their metabolism to survive extreme environments, including space.
But at a molecular level, how do their cellular structures remain intact without collapsing or denaturing when all water is removed?
What prevents their DNA from fracturing completely in the absence of a fluid cellular matrix?
Are there specific protectant proteins involved that replace water's structural role? #science