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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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Is there a limit to how much energy you can cram into, or pull out of one patch of space?
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Is Dark Energy Getting Weaker?
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