New NASA chief doesn't think UFOs are an optical illusion, according to interview

An upcoming Pentagon report on UFOs isn't expected to determine what the mysterious flying objects observed by Navy pilots are, but NASA is now among the government agencies interested in finding out.

In an interview with CNN, Bill Nelson, the space agency's new administrator who is a former Florida senator and spaceflight veteran, cast doubt on one explanation — that the objects are simply optical illusions. He added “I think I would know” if UFOs are evidence of extraterrestrials visiting Earth, although Nelson admitted it’s too early to rule out that possibility.

He said he began...