Neil deGrasse Tyson – "UFO" Doesn't Mean "Aliens"

Teacher or professor: StarTalk
Subject: Astronomy
Content of the Lesson: UFO sightings happen all the time – maybe even today! What would happen if top-secret UFO information leaked from the government? Neil deGrasse Tyson and co-host Harrison Greenbaum investigate the obvious pitfalls and enticing questions that come with UFO sightings. Plus, Neil sends his own message to any aliens out there listening.


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