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PBS Space Time
Season 2025 • Episode 19 • At What Point Does Spacetime Become Quantum?
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PBS Space Time Season 2025, Episode 19: At What Point Does Spacetime Become Quantum?
To observe the quantum nature of gravity and of spacetime itself, we need a particle collider the size of the solar system. Or we could just physics smarter and build one on a lab bench. Here’s how. Watch PBS Space Time Season 2025, Episode 19 At What Point Does Spacetime Become Quantum? in HD free online. Enjoy high-quality streaming of PBS Space Time Season 2025, Episode 19 and share your thoughts in the comments below!
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Episodes
25 episodes
How Many Black Holes Are In The Solar System?
Dark matter has eluded us for many decades. Even our most advanced particle colliders and sophisticated underground detectors have come up short. But it may be that we can finally solve this mystery with a much simpler experiment, involving a ray of light, a good clock, and the planet Mars.
21 min
Does Timescapes DISPROVE Dark Energy?
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16 min
The Crisis in Physics: Why the Higgs Boson Should NOT Exist!
According to quantum physics, the universe should have collapsed on itself in the instant after the Big Bang due to all particles being 100 million billion times heavier. Recent observations of the universe existing suggest that this may not have happened. Even more recent experiments at the Large Hardron Collider have failed to find out why. In particular, why the Higgs boson is light enough to allow the universe to exist. This is part of something known as the hierarchy problem, and some consider it to be the most important unsolved problem in physics.
19 min
The Final Barrier to (Nearly) Infinite Energy
They say fusion is 50 years away, no matter when you ask. Then why are billions suddenly being pumped into fusion startups? Yes to train LLMs, but there's a reason the technobrats are bullish on fusion in particular. The fact is, the technological challenges have been chipped away and in many cases solved over the past decades, and there's really no one deal-breaker difficulty remaining. One of the final challenges is deciding on the physical vessel to contain our mini artificial stars--and we have some pretty sci-fi options that are nearly ready to go.
22 min
Will The Big Bang Happen AGAIN (and Again)?
How did the universe begin? How can something come from nothing? One way to “solve” this most difficult of philosophical conundrums is to avoid it altogether. Maybe the universe didn’t begin. Maybe the Big Bang was just one in an endless cycle.
18 min
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18 min
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20 min
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19 min
Why Didn’t Antimatter Destroy The Universe? | LHC Breakthrough
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18 min
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20 min
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21 min
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22 min
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21 min
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20 min
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20 min
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20 min
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19 min
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15 min
At What Point Does Spacetime Become Quantum?
To observe the quantum nature of gravity and of spacetime itself, we need a particle collider the size of the solar system. Or we could just physics smarter and build one on a lab bench. Here’s how.
21 min
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21 min
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25 min
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22 min
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23 min
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23 min
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27 min