第三千七百二十八章 事物的两面性(1 / 2)

余静立即回答道:“天体在降落过程中,会与大气层产生剧烈的摩擦,继而产生极高的温度,所以它在靠近地面的时候就会将周围的一切焚化。这片山间原来就是有浓密的植被,也会被当场烧成一片灰烬。”

她跟着又举起望远镜望着远处山间继续分析道:“天体在撞击这片大山的时候,会产生十分剧烈的爆炸,爆炸的当量至少要有几十万吨,剧烈的爆炸更会产生高温和巨大的冲击波,周围肯定要成为一片焦土。你们看远处那片山间,灰色的岩石中遍布着一片片黑色的斑点,这应该是爆炸后残留下的痕迹。”

这时小雅有些吃惊的说道:“几十万的爆炸当量?这可比二战后期在广岛爆炸的原子弹的威力,都要大上许多倍吧!”

余静面色凝重的回答道:“对,当时那颗原子弹的爆炸威力,只相当于两万吨TNT炸药,可当时爆炸中心就已经高达六千度高温,当天就直接造成了六万人当场死亡。”

吴雪莹听到余静的讲述,她吃惊的叫道:“才两万吨就造成了这么大的伤害!那这颗不明天体撞击这里相当于数十颗那种原子弹呀,这要造成多大的伤害呀?”

余静说道:“对,这种天体撞向地球,确实是对地球生物的一种毁灭性的灾害。好在这颗不明天体,降落在了这片荒芜人烟的高原地带,所以对我们人类并没有造成生命伤害。”

她跟着说道:“几年前,一颗直径15米,重达7000吨的太空岩石也曾撞击我们地球,它撞击地球时释放的能量,相当于50万吨TNT爆炸,造成了大约1500人受伤。好在那里人烟稀少,并没有造成大规模的伤害。如果那颗太空岩石直接落进一座城市,可当场将这座城市摧毁,威力十分巨大。”

小雅几人听着余静的介绍,几人不约而同的惊叫道:“哎呦我的妈呀,这也太吓人了,简直是毁灭呀!”小雅有些后怕的看着周围山间说道:“多亏这颗不明天体没落到城市中,不然还不知道要造成多大的伤害呢!”

余静看到几人后怕的样子,笑着说道:“不会的。在天文学中,这些在太空中直奔地球飞来的星体被称为陨星,落到地球上的才叫陨石,而能直接降落到城市的陨星几率很小。据天文学家估算,地球每天都要接收来自太空的大约五万吨陨石,这些陨星在降落的过程中,大部分都在大气层中被烧毁,只有一些体积较大的才会落到地球上,”

她抬手指着周围的群山,继续讲道:“我们陆地的面积只占地球表面的百分之二十九,其余都是海洋。而这百分之二十九的陆地,也并完全适合人类居住和活动。相关资料显示,我们人类居住和活动的区域,只占地球陆地面积的大约五分之一。如此算来,陨星落到我们头顶的几率简直就是微乎其微,所以你们不用担心。”

吴雪莹听到这里,放心的说:“好好好,不砸到我们头顶就行。”余静看着她笑了起来,她跟着举起望远镜望着前面的山间继续说道:“莹莹你看,从前面山间的情况看,这颗落到地球上的天体并不算大。在M国就有一个巨大的陨石坑,这个陨石坑深达170米,直径达到了1240米。”

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