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PBS Space Time

Is It Irrational to Believe in Aliens?

Video duration: 6:49Expires: 10/29/20Video has closed captioning.

Aliens! Could humans really be alone in this expansive universe? And if we're not, how come we've never made contact with other intelligent life? Everyone's thought about it; especially members of the scientific community. Join Gabe as he presents some of the most popular theories that scientists use to rationalize their support or skepticism of the existence of aliens.

Episodes of PBS Space Time64

Video thumbnail: PBS Space Time Life on Europa?

PBS Space Time

Life on Europa?

The can the Hubble Telescope tell us about the potential for life on Europa?

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Life on Europa?

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Video thumbnail: PBS Space Time Quantum Entanglement (The Bohr-Einstein Debate)

PBS Space Time

Quantum Entanglement (The Bohr-Einstein Debate)

Let's settle the quantum entanglement once and for all.

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Quantum Entanglement (The Bohr-Einstein Debate)

11:24

Video thumbnail: PBS Space Time Self-Replicating Robots and Galactic Domination

PBS Space Time

Self-Replicating Robots and Galactic Domination

Will self-replicating robots reshape our galaxy?

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Self-Replicating Robots and Galactic Domination

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Video thumbnail: PBS Space Time Should We Build a Dyson Sphere?

PBS Space Time

Should We Build a Dyson Sphere?

The Kepler telescope recently found a strange partial eclipse...possibly a Dyson Sphere.

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Should We Build a Dyson Sphere?

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