'The Tunguska Fireball' -- subject(s): Tunguska meteorite
'The Mystery of the Tunguska Fireball'
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The Tunguska Event took place in the Tunguska River...I don't
know much about it but you know this is good enough.:) thank you
for viewing my answer!!~Taeven Perkins
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We don't know it was 103 years ago. There is no evidence of
alien involvement at Tunguska.