If alien civilizations exist throughout the universe, many have had billions of years to develop technology, expand their population and energy supplies, and ... source

Witness description: "A large extremely bright white light caught my attention through a glass window out of nowhere. It seemed to be getting closer and made me feel extremely uncomfortable, so I stood up. The light blinked off really quick to a very faint green light while simultaneously moving ...

Speaker: Jason T. Wright, Penn. State University Slides: http://www2.astro.psu.edu/%7Ejtwright/Dyson/SETI.pdf Abstract: If alien civilizations exist throughout the ... source