scott-gotankgo: Exactly 104 years ago today, the Tunguska explosion took place over Siberia. (Source: bibliotecapleyades.net)

scott-gotankgoExactly 104 years ago today, the Tunguska explosion took place over Siberia. (Source: bibliotecapleyades.net)

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    Exactly 104 years ago today, the Tunguska explosion took place over Siberia. (Source: bibliotecapleyades.net)
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