UFO expert says aliens may or may not be out there but 'technological artifacts exist way beyond our comprehension'

 UFO expert says aliens may or may not be out there but 'technological artifacts exist way beyond our comprehension'

Sarah Al-Arshani 

“University of Southern California Professor Madhu Thangavelu told Insider that what pilots saw may not be extraterrestrial in origin, as there still isn't any public evidence that aliens exist – but that doesn't mean the possibility is off the table. 

"[In the] scientific field, the material evidence is important," he said. 

NASA is now also looking into UAP

NASA's new chief, Bill Nelson, told CNN last week that the agency is setting up an investigation to further look into the flying objects. 

Nelson said he doesn't think the UFOs prove the existence of aliens, but said he referred to scientists who could better explain what they are. 

"We don't know if it's extraterrestrial. We don't know if it's an enemy. We don't know if it's an optical phenomenon," Nelson said. "We don't think [it's an optical phenomenon] because of the characteristics that those Navy jet pilots described ... And so the bottom line is, we want to know."

UFO expert says aliens may or may not be out there but 'technological artifacts exist way beyond our comprehension'