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NASA scientist says Earth may have been visited by aliens

https://www.foxnews.com/science/nasa-scientist-says-earth-may-have-been-visited-by-aliens

Excerpt: NASA was set up in part to find traces of extraterrestrial life in the universe. While the government space agency has yet to find any definitive evidence that extraterrestrials exist, one NASA scientist believes we may have already been visited by them here on Earth. In a new research paper, Silvano P. Colombano, who in addition to being a computer scientist at NASA Ames Research Center, is also a professor, theorizes that intelligent life may not be what we are used to and may not necessarily use the traditional building blocks of that humanity is accustomed to, such as carbon. (There are actually two stories here, one in print about a Dr. Colombano of NASA saying possible extraterrestrial life might not be carbon based, and therefore, even if we saw it, we might not recognize it.  The other story is the video that accompanies this story with Tucker Carlson interviewing Nick Pope, a widely recognized former Ministry of Defense investigator of UFO phenomena. The first story is ho-hum speculation. The second concerns a recently leaked Pentagon video taken by what seems to be a gun-sight camera in 2004 of an “aircraft” that dogged a USN aircraft carrier group for several days. Among other things, the ‘aircraft” could apparently cloak itself like a Klingon vessel. Vague rumors of this video have been floating around for some months, but seeing the video makes it seem far more possible. Unsettling. Watch for yourself. Link may not be live.  Ron P.)