Home > Antenna > Plan to save Earth from asteroid impact > It's happened before... > Blast from the past One of the few impacts on historical record was in 1908. A meteorite around 60-90 metres across exploded 8 kilometres above Tunguska in Siberia. The energy released by the impact was equivalent to 700 times the atom-bomb blast at Hiroshima. Crater face Page 3 of 5 Hole in the ground back to: Plan to save Earth from asteroid impact       Image: Dan Durda, FIAAA / B612 Foundation

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