Public Broadcasting for Northwest Indiana & Chicagoland since 1987
Play Live Radio
Next Up:
0:00
0:00
0:00 0:00
Available On Air Stations

The Gravity Particle Should Exist. So Where Is It?

Season 11 Episode 16 | 21m 31s

Physics is this close to understanding the entire universe. And what lives in this gap? Many physicists think it’s the elusive graviton—the quantum particle of gravity—whose discovery will finally allow us to stitch together our two great theories of nature into a single master theory. But what is the graviton, and does it even exist?

Aired: 11/12/25
There’s a new generation of experiments that may unlock the gravity particle.
The universe thrums with quantum fields, except something may be missing: the sterile neutrino.
Gravitons, the particle of quantum gravity, may be impossible to detect.
2025 was the international year of quantum science, but today we examine its origins.
We’ve found lots of “habitable” worlds but we don’t know what factors are needed for life.
Antimatter drives sound like science fiction, but they may not be as far as you think.
Does quantum mechanics allow the future to retroactively influence the past or not?
Life on mars could result in humanity’s destruction via Fermi Paradox.
Is there evidence for the existence of an enormous number of other universes?
How to build a particle collider the size of the solar system.