AP
Millions of downed trees ringed the Tunguska site for years after the 1908 explosion.
Did a UFO deliberately crash into a meteor to save Earth 100 years ago? That's what one Russian scientist is claiming.
Dr. Yuri Labvin, president of the Tunguska Spatial Phenomenon Foundation, insists that an alien spacecraft sacrificed itself to prevent a gigantic meteor from slamming into the planet above Siberia on June 30, 1908.
The result was was the Tunguska event, a massive blast estimated at 15 megatons that downed 80 million trees over nearly 100 square miles. Eyewitnesses reported a bright light and a huge shock wave, but the area was so sparsely populated no one was killed.
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