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In 1908, something exploded above the remote Siberian forest of Tunguska with enough force to flatten roughly 2,000 square kilometres of trees — and more than a century later, no impact crater has ever been found, because the object, probably a small asteroid, appears to have blown itself apart in the atmosphere.

In 1908, something exploded above the remote Siberian forest of Tunguska with enough force to flatten roughly 2,000 square kilometres of trees — and more than a century later, no impact crater has ever been found, because the object, probably a small asteroid, appears to have blown itself apart in the atmosphere.

The 1908 Tunguska event flattened ~2,000 sq km of Siberian forest and left no crater. The reason is an airburst: a stony asteroid that disintegrated several kilometres up. What the evidence shows, what is still argued, and why a century-old blast still drives planetary defence. The post In 1908, something exploded above the remote Siberian forest of Tunguska with enough force to flatten roughly 2,000 square kilometres of trees — and more than a century later, no impact crater has ever been found, because the object, probably a small asteroid, appears to have blown itself apart in the atmosphere. appeared first on Space Daily .