opinion polls, about extraterrestrials
A 1997 Time/Yankelovich poll revealed that one third of Americans are convinced that intelligent beings from other worlds have visited the Earth. Of these, nearly two-thirds believe an alien spacecraft came down near Roswell (see Roswell Incident) and four-fifths believe the US government is not telling all that it knows about UFOs. In a 1998 poll conducted by the Marist Institute for the Planetary Society, 60 percent of those interviewed thought that there was intelligent life on other planets and of these, 47 percent thought that intelligence elsewhere would be more advanced than us (see extraterrestrial intelligence, more advanced than us), 40 percent thought it would be at about the same level, and only 13 percent thought it would be less advanced. To the question "Do you think life on other planets is friendly or hostile?", 86 percent thought it would be friendly and 14 percent hostile (see extraterrestrial intelligence, nature of).
Related category SETI
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