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PBS Space Time
What If Dark Energy is a New Quantum Field?
Season 8
Episode 24
What is Quintessence? Well we know that something is up with the way the universe is expanding - there’s some kind of anti-gravitational effect that’s causing the expansion to accelerate. We don’t know what it is - just that it competes against the inward-pulling effect of gravity. We call this mysterious influence dark energy. But, what is dark energy, really?
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13:42
In fact, the first tantalizing evidence is already in and we take a look.
15:34
We dive into the weird world of quantum chromodynamics and the strong force.
15:00
Today we’re going to try to save reality - or at least realism.
14:31
Is space so deadly that we’re effectively imprisoned in our solar system forever?
14:09
Black holes are very real, but are also a theoretical nightmare.
13:29
Neils Bohr once said “Physics concerns what we can say about Nature."
13:14
It’s possible to stitch together a Frankenstein flip book of galaxy evolution.
14:48
The effect of inhabitable space in the galaxy may be why we haven't seen aliens.
