During a military mission, whether in peace or in war, the inability to identify an object within an area of operation represents a significant problem.
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Articles on UFO
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About 5 percent of all UFO sightings cannot be easily explained by weather or human technology. A physicist argues that there's compelling evidence to justify serious scientific study and that the skeptics should step aside – for the sake of humanity.
Crop circles are global phenomena gaining attention as paranormal culture becomes mainstream, along with a hybrid approach that emulates scientific investigation.
Twenty years ago, the paranoia that consumed cults like Heaven's Gate existed on the margins of American society. Now it's moved toward the center of the nation's political life.
Churchill allowed science to flourish. Without a similar attitude in today’s politics, we may hit a bottleneck for life that leaves a Universe without a single human soul to enjoy it.
Millions of people claim to have had encounters with aliens, but most can be explained by psychology rather than UFOs.
Whether it's Hillary Clinton's courting the UFO vote or Donald Trump's lending credibility to various conspiracy theories, the "triumph of reason" seems to have gone by the wayside.
It's easy to attribute the wrong cause to a mysterious phenomenon. But science has some tools to help you avoid these attribution errors.
Was it a UFO? Was it a high-tech plane? Here's what lucky people really saw over Scotland on February 29.
Top contributors
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Associate professor in astronomy, Monash University
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Associate Professor, Japan Aerospace Exploration Agency (JAXA)
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Assistant Professor of Religious Studies, Texas State University
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Professor of Astronomy, University of St Andrews
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Reader in Applied Cognitive Psychology, Manchester Metropolitan University
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Senior Lecturer and Researcher in Cognitive and Parapsychology, Manchester Metropolitan University
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Associate Professor of Religion, Lake Forest College
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Professor, Department of Geography, Simon Fraser University
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Associate Professor of Physics, University at Albany, State University of New York
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Professor of Aerospace Engineering Sciences, University of Michigan
