The Gravity Particle Should Exist. So Where Is It?
PBS Space Time · Season 2025 · Episode 23
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?
Episode Details
Air date, runtime, timezone, and episode position.
Season
2025
Episode
23
Air Date
13/Nov/2025
Air Time
12:00
Runtime
23 min
Overview
Episode summary.
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?
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