幽浮學 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "幽浮學" in Chinese language version.

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  • Edward U.Condon. Scientific Study of Unidentified Flying Objects. 1968 [May 4, 2010]. (原始内容存档于2017-09-12). Our general conclusion is that nothing has come from the study of UFOs in the past 21 years that has added to scientific knowledge. Careful consideration of the record as it is available to us leads us to conclude that further extensive study of UFOs probably cannot be justified in the expectation that science will be advanced thereby. 

nsa.gov

  • Communication With Extraterrestrial Intelligence (PDF). NSA. [2021-08-18]. (原始内容存档 (PDF)于2021-07-09). Sir Bernard Lovell, one of the world's leading radio astronomers, has calculated that, even allowing for a margin of error of 5000%, there must be in our own galaxy about 100 million stars which have planets of the right chemistry, dimensions, and temperature to support organic evolution. 
  • UFO Hypothesis and Survival Questions (PDF). NSA. [2021-08-18]. (原始内容存档 (PDF)于2021-07-09). 
  • Peter Gersten, Frontiers of Science. What the U.S. Government Knows About UnidentifiedFlying Objects (PDF). NSA. [2021-08-18]. (原始内容存档 (PDF)于2021-07-09). New evidence for the existence of unconventional aerial objects relies no longer on the credibility of civilian reports but on the records of scientists, military personnel, intelligence analysts, law enforcement officers and other reliable and responsible people. Their testimony can be found in three thousand pages of previously classified documents on UFOs released (mostly through Freedom of Information Act suits) over the past few years by the Departments of State / Army / Navy /Air Force/Defense, the Federal Bureau of Investigation, the National Securitv Agency, the Detense Intelligence Agency and the central Intelligence Agency. 
  • UFO Documents Index. NSA. [2021-08-18]. (原始内容存档于2021-08-23). 
  • What Do NSA and NASA Have in Common?. NSA. [2021-08-18]. (原始内容存档于2021-08-13). 

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