Observations of the patterns of water vapor in the exhaust plumes of NASA's Space Shuttle have been used to explain the mysterious Tunguska event of 1908 as the impact and explosion of an icy comet in Siberia.
Observations of the patterns of water vapor in the exhaust plumes of NASA's Space Shuttle have been used to explain the mysterious Tunguska event of 1908 as the impact and explosion of an icy comet in Siberia.
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