Back to Show
PBS Space Time
What If Alien Life Were Silcon-Based?
Season 9
Episode 3
Life as we know it is carbon-based, but does it have to be this way? There’s another element on the periodic table that shares some of the key properties of carbon but is far more abundant on most planets. I’m talking about silicon. So is there silicon-based life out there?
Sign up now for inspiring and thought-provoking media delivered straight to your inbox.
Support Provided By

12:32
We delve into some of the most famous paradoxes of special relativity.

12:43
Transitions of quantum systems have always defied observation...until now.

12:11
Erwin Schrödinger provides a new perspective that helps us navigate quantum mechanics.

12:12
This is a new type of supernova that can only happen at the end of the universe.

12:07
Why do we remember the past and not the future?

10:36
It's time to begin our journey towards really understanding time.

13:42
Space Time weigh in on physics and free will.

13:48
We explore how forces of nature, once unified, were forced to separate.

12:50
This is how the Penrose Singularity Theorem Predicts The End of Space Time.

12:39
if time is connected to space does that mean that the future is predestined?

13:09
We explore what exists in the past, present and future.

13:01
We may have detected the signature of alien life - Venusian life -for the first time.