Neil deGrasse Tyson: Aliens & UFOs explained by astrophysicist

UFOs from the perspective of a world-renowned astrophysicist.

Dr. Neil deGrasse Tyson, the Frederick P. Rose Director of the Hayden Planetarium at the Rose Center for Earth and Space and a research associate in the department of astrophysics at the American Museum of Natural History, explains his thoughts on reports of unidentified flying objects, extraterrestial life on Earth, and the Roswell aliens.

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