PBS Space Time: Is It Irrational to Believe in Aliens?

8mAired 2015-02-18

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. We may never know the answer to this age old question, but a little scientific thinking never hurt anybody!

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Episodes

Season

43 episodes

PBS Space Time: Is It Irrational to Believe in Aliens?

What Planet is Super Mario World?

Is It Irrational to Believe in Aliens?

How Do You Measure the Size of the Universe?

Should We Colonize Venus Instead of Mars?

What Will Destroy Planet Earth?

Can A Starfox Barrel Roll Work In Space?

Cosmic Microwave Background Explained

Is the Moon in Majora’s Mask a Black Hole?

Could You Fart Your Way to the Moon?

How to Weigh a Fart

Could NASA Start the Zombie Apocalypse?

Are Space and Time An Illusion?

What's the Most Realistic Artificial Gravity in Sci-Fi?

Should the First Mars Mission Be All Women?

9 NASA Technologies Shaping YOUR Future

The Real Meaning of E=mc²

Habitable Exoplanets Debunked!

Is Gravity An Illusion?

Challenge: What Happens to a Helium Balloon in Freefall?

How to Signal Aliens

The Calendar, Australia & White Christmas

Can a Circle Be a Straight Line?

Curvature Demonstrated + Comments

The Leap Second Explained

Can You Trust Your Eyes in Spacetime?

SPECIAL ANNOUNCEMENT + Flat Spacetime Geometry Comments

General Relativity & Curved Spacetime Explained!

What Physics Teachers Get Wrong About Tides!

Challenge: Which Particle Wins This Race?

Do Events Inside Black Holes Happen?

Watch THIS! (New Host + Challenge Winners)

Does Dark Matter BREAK Physics?

What Happens At The Edge Of The Universe?

The Speed of Light is NOT About Light

5 REAL Possibilities for Interstellar Travel

Have Gravitational Waves Been Discovered?!?

Is The Alcubierre Warp Drive Possible?

Why Haven't We Found Alien Life?

Challenge: Can you save Earth from a Killer Asteroid?

5 Ways to Stop a Killer Asteroid

100 Years of Relativity + Challenge Winners!

How to Build a Black Hole

The Higgs Mechanism Explained