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宇宙衝突

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Damage to trees caused by the Tunguska event. The object, just 50–80 metres (160–260 ft) across, exploded 6–10 km (3.7–6.2 mi) above the surface, shattering windows hundreds of kilometres away.

天体衝突の科学地球と太陽系の進化に与える影響

天体衝突小惑星隕石クレーターチクシュルーブ
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