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中科院紫金山天文台观测基地位于江苏省盱眙县（）国家森林公园，在该天文台成功发现的小行星中，编号为4360号的小行星被命名为“盱眙星”。

One of the most daring deep-space missions NASA has ever launched is turning out to be one of the least publicized. The target is a large asteroid (小行星) named 1992KD, which orbits the sun millions of miles from Earth. But that destination is almost incide

Asteroids(小行星), also known as " minor planets ", are ________ in the outer space.（2分） A numerous B prosperous C humorous D fabulous

大约6500万年前，一颗直径超过10千米的近地小行星撞击过地球，这次撞击直接导致了____的灭绝。

Asteroids(小行星), also known as " minor planets ", are ________ in the outer space.A. numerous B. prosperous C. humorous D. fabulous

Unless we spend money to spot and prevent asteroids (小行星)now, one might crash into Earth and destroy life as we know it, say some scientists. Asteroids are bigger versions of the meteoroids (流星)that race across the night sky. Most orbit the sun far

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