Assertion: ufo | /r/HasProperty | extraterrestrial spacecraft
Facets:
value: necessarily
type: DEGREE
Source sentences:
text: (1)Some people believe UFOs are extraterrestrial spacecraft, but most scientists and academics say there is no compelling evidence to support such a conclusion.
text: (2)As a result, claims that UFOs are extraterrestrial spacecraft are generally dismissed through lack of evidence.
text: The full substitution of neutral words for terminology premised on skeptical philosophical biases (such as, "some people believe that UFOs are extraterrestrial spacecraft" [rather than "some people assert that", which would be neutral; and, by the way, it is majority per centage these days, not only "some people"]; "some cases have alleged associated physical evidence" [the evidence is not merely alleged, nor is it merely alleged that the evidence is associated with U.F.O.s]).
text: It says that some people believe that "UFOs are extraterrestrial spacecraft, but most scientists and academics say there is no compelling evidence to support such a conclusion".
text: However, the original working term UFO has largely become popularized in the public mind with the notion that UFOs might be extraterrestrial spacecraft (the ETH or Extraterrestrial hypothesis).
text: Many people claim UFOs are extraterrestrial spacecraft but the majority of scientists say there is no definitive evidence to support that supposition.
text: Not all ufologists believe that UFOs are necessarily extraterrestrial spacecraft, or even that they are objective physical phenomena.
text: Explanations for the saucers, or "flying disks" as they were also known at the time, included natural phenomena, such as Venus or unusual clouds, illusions, hoaxes, balloons, prototype aircraft and secret weapons (friendly or hostile), and the extraterrestrial hypothesis – the belief that at least some UFOs are extraterrestrial spacecraft..
text: A faction within Project Sign concluded by mid-1948 that UFOs were extraterrestrial spacecraft, but air force Chief of Staff Gen. Hoyt S. Vandenberg rejected its report.