Hard drive from wreckage of shuttle Columbia which identified to contain results from an experiment to study the way xenon gas flows in microgravity. Once believe that data were totally destroyed, still can be recovered 99% of that data contained. The result was published in a journal called Physical Review E. By the way the HDD was 400MB Seagate.
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More photo of these HDD can be found at http://bit.ly/9h8di0