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.
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.
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。
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