AGAIN – The Tunguska mystery has been solved: it was a comet, not a UFO, that flattened leveled 830 square miles of Siberian forest in 1908. But now NASA scientists have verified this by studying the exhaust plume from the NASA space shuttle launched a century later.
Engineer Michael Kelley was able to connect the two events by what followed each one about a day later: brilliant, night-visible clouds, or noctilucent clouds, that are made up of ice particles and only form at very high altitudes and in extremely cold temperatures.
The researchers contend that the massive amount of water vapor spewed into the atmosphere by the comet
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