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UFO

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Secret UFO program

Earlier this week, the New York Times and Politico revealed the existence of a secret government program to investigate UFO sightings. It was especially focused on encounters by members of the military. The program began in 2007 and ended five years later. Its former head, Luis Elizondo, is convinced that something compelling is out there. Time science editor Jeffrey Kluger joins "CBS This Morning: Saturday" to discuss the real focus of the Pentagon program and why it probably didn't actually end in 2012.

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What is the "UFO Highway?"

Flying saucers and visits from extraterrestrials have long been a source of fascination in American culture. There are many who believe aliens and their ability to visit Earth are a fact, and some are willing to go to great lengths to prove it. That's the subject of author Ben Mezrich's new book, "The 37th Parallel," which tells the story of one man's 30-year quest to prove aliens are real. Mezrich joins "CBS This Morning: Saturday" to discuss the book and the so-called "UFO Highway."

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UFOs and aliens have always fascinated people, but a new project announced this week by famed physicist Stephen Hawking, Facebook's Mark Zuckerberg and Russian billionaire Yuri Milner takes the search for intelligent life in the universe a step further

UFOs and aliens have always fascinated people, but a new project announced this week by famed physicist Stephen Hawking, Facebook's Mark Zuckerberg and Russian billionaire Yuri Milner takes space exploration and the search for intelligent life in the universe a step further. Jeffrey Kluger, Time magazine’s editor-at-large, joins “CBS This Morning: Saturday” to discuss the implications of the venture.

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