已故科学家卡尔·萨根在著作《宇宙》中叙述了外太空物体如何有规律和地球发生碰撞。

In his book Cosmos, the late scientist Carl Sagan talks about the way in which the earth is regularly struck by material from outer space.

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在已故的科学家当中，有近四成的科学家年寿介于74 ~ 84岁之间，有63.27%的人年寿介于70 ~ 89岁。

Among the deceased scientists, nearly 40% of them aged from 74 to 84 and about 63.27% aged from 70 to 89.

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在已故的科学家当中，有近四成的科学家年寿介于74 ~ 84岁之间，有63.27%的人年寿介于70 ~ 89岁。

Among the deceased scientists, nearly 40% of them aged from 74 to 84 and about 63.27% aged from 70 to 89.

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