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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?
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12:47
We look into what is inside a black hole.

14:21
We ask and explore If the universe has a center and where it could be.

13:47
We explore and challenge electric charge's fundamental property and if it sticks.

15:33
Recent discovery of Proxima Centauri has reopened talks of our best chance of Earth 2.0.

15:41
Cosmic strings could be the most most bizarre undiscovered entities to actually exist.

13:31
We explore Objective Collapse Theories in a down to earth objective way.

12:36
We explore how a black hole manages to communicate its gravitational force.

12:26
We explore the possibility of building a universe and all the limitations it presents.

14:14
Let’s learn how to cheat the universe.

14:28
Time to update you on the hunt for galactic empires.

13:29
This is what happens if microscopic primordial black holes could actually hit Earth.

14:07
Black holes of string theory - fuzzballs - are perhaps even weirder than the regular type.