近地天体 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "近地天体" in Chinese language version.

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  • Portree, David S. Earth-Approaching Asteroids as Targets for Exploration (1978). Wired. March 23, 2013 [2017-11-09]. (原始内容存档于2014-01-12). People in the early 21st century have been encouraged to see asteroids as the interplanetary equivalent of sea monsters. We often hear talk of “killer asteroids,” when in fact there exists no conclusive evidence that any asteroid has killed anyone in all of human history. … In the 1970s, asteroids had yet to gain their present fearsome reputation … most astronomers and planetary scientists who made a career of studying asteroids rightfully saw them as sources of fascination, not of worry. 

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