PBS Space Time: The Universe Itself Might Be Hiding the Gravity Particle From Us

20mAired 2026-01-13

To progress to the next level in understanding reality, we need to combine quantum mechanics and Einstein’s general relativity. And to do that, most physicists believe we need a theory of quantum gravity .. which means we need gravitons. But it also seems like the laws of physics make it impossible to ever detect this quantum particle of gravity. Almost like the universe is set up to keep the final answer forever out of our reach. So, can we outsmart the universe, catch a graviton, and finally solve physics?

Playback is provided by a third-party source (XPrime). StreamFlix does not host any video files. If a stream fails to load, the source may be temporarily unavailable.

Episodes

Season

7 episodes

PBS Space Time: The Universe Itself Might Be Hiding the Gravity Particle From Us

The Universe Itself Might Be Hiding the Gravity Particle From Us

This Particle Solved Everything. We Just Found Out It Isn't Real

The Universe Tried to Hide the Gravity Particle. Physicists Found a Loophole.

The Universe Is Racing Apart. We May Finally Know Why.

Most of Reality Is Invisible. We May Finally Be About to Reveal It.

Something Disturbing Happens When You Solve Einstein's Equations This Way

Earth’s Core Should Be Impossible. A New State of Matter Explains It.