An asteroid or comet fragment around 60 meters across is believed to have been behind the Tunguska Event, a powerful explosion that took place over Russia in 1908.

据信，1908年俄罗斯上空发生的强劲爆炸——通古斯大爆炸背后，有一个直径约六十米的小行星或慧星碎片。

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An asteroid or comet fragment around 60 meters across is believed to have been behind the Tunguska Event, a powerful explosion that took place over Russia in 1908.

据信，1908年俄罗斯上空发生的强劲爆炸——通古斯大爆炸背后，有一个直径约六十米的小行星或慧星碎片。

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