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UFO the Real Deal

   2011    Technology
Many argue that flying saucers and other extra-terrestrial space ships continuously visit the earth. If that were true, what kinds of technologies would such alien spacecraft require? And do eyewitness reports of UFO sightings jibe with modern theories of how interstellar travel might be possible? Authors, astronomers and theoretical physicis ...ts weigh in with the blueprints for inertia-canceling devices, nuclear-powered craft, antimatter propulsion systems and even warp drives. Based on Einstein's theories and countless scientific studies, we'll find out how these visitors might bridge the vast distances between the stars. And if they could survive such hazardous journeys, are they flesh and blood or intelligent machines?   Show More

What Have UFOs Done for Us

   2015    Culture
From unexplained flashes in the night sky to flying saucers, this episode delves into the mysterious world of UFOs. How our drive to explain these bizarre phenomena, and desire to discover little green men, has in fact transformed our understanding of the universe
Series: The Sky at Night
Blood of the Vikings

Blood of the Vikings

2001  History
First Life

First Life

2010  Science
Latino Americans

Latino Americans

2013  History
Life

Life

2009  Nature
Cosmos: Possible Worlds

Cosmos: Possible Worlds

2020  Science
Nova Wonders

Nova Wonders

2018  Technology
The Big Think

The Big Think

2017  Technology