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PBS Space Time

How Do You Measure the Size of the Universe?

Video duration: 5:36Expires: 10/22/20Video has closed captioning.

The universe is HUGE. But, there is only so much of the universe we can ACTUALLY see, and if we wanted to measure that FINITE space, how would we do it? A gigantic ruler? One really long car ride? Or maybe it's something even more spectacular, something that involves not only the observable universe as it is NOW, but how it was when it was first BORN?

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?

9:37

Life on Europa?

9:37

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.

11:24

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?

9:57

Self-Replicating Robots and Galactic Domination

9:57

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.

10:14

Should We Build a Dyson Sphere?

10:14

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