On this day the drilling of the deepest hole that humans have ever made began in Soviet Union. This hole ...
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1970: Drilling of the World’s Deepest Hole Began
1970: Drilling of the World’s Deepest Hole Began
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1971: A Communist Probe – the First Human Object on Mars
1971: A Communist Probe – the First Human Object on Mars
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1991: How did the Final Dissolution of the Soviet Union Transpire?
1991: How did the Final Dissolution of the Soviet Union Transpire?