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PBS Space Time explores the outer reaches of space, the craziness of astrophysics, the possibilities of sci-fi, and anything else you can think of beyond Planet Earth. Host Matt O'Dowd breaks down both the basic and incredibly complex sides of space and time.

Watch • 12:39
PBS Space Time
The Most Important Satellite You’ve (Probably) Never Heard Of
One of the most important reasons we go to space is to know our own planet better.
Episode: S11 E10 | 12:39
Watch • 17:14
PBS Space Time
Why The Multiverse Could Be Real
Can something that exists be bad science?
Episode: S11 E9 | 17:14
Watch • 18:56
PBS Space Time
Why Is All DNA Right Handed?
It may be that our very DNA inherited its twist from the underlying handedness of reality.
Episode: S11 E8 | 18:56
Watch • 10:45
Eons
That Time Earth was Sticky
What exactly made this time period so very, very sticky?
Episode: S8 E1 | 10:45
Watch • 27:01
Building Blocks
Every Child is Different
Every child has their own pace and journey.
Episode: S1 E5 | 27:01
Watch • 11:15
Reactions
Liquid Marbles are the Coolest Scientific Breakthrough I've Made (So Far)
George tries to make a new discovery in a huge field of science... and he might have.
Episode: S11 E9 | 11:15
Watch • 1:54:54
FRONTLINE
Remaking the Middle East: Israel vs. Iran
FRONTLINE examines how Israel ended up fighting wars in Gaza and Iran — and the U.S. role.
Episode: S2025 E10 | 1:54:54
Watch • 17:21
PBS Space Time
Are The Fundamental Constants Finely Tuned? | The Naturalness Problem
Did God have any choice in creating the world? So asked Albert Einstein
Episode: S11 E7 | 17:21
Watch • 12:00
Reactions
Exposing Fake Honey Using Carbon-13
This week Alex takes to the lab and investigates the stable isotopes in 20 different honeys.
Episode: S11 E8 | 12:00