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28-May-2020 Thursday
The Tunguska explosion could have been caused by an asteroid that is still orbiting the Sun
VAKT
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The Tunguska explosion could have been caused by an asteroid that is still orbiting the Sun
Astronomy
Meteorite
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Nauchpop
Tunguska meteorite
20-December-2014 Saturday
70% of TOTAL oxygen in the atmosphere
ZloyChel
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Biology
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