For decades, scientists were convinced the universe had misplaced a third of its ordinary matter. Stars? Planets? Us? Sure. But a huge chunk was just… MIA.

Spoiler alert: it wasn’t stolen. It was hiding in plain sight inside something called the WHIM—that’s Warm-Hot Intergalactic Medium, not your cousin’s jazz fusion band.

In this episode, we break down how fast radio bursts, X-ray telescopes, and a healthy dose of cosmic detective work finally cracked the case. We’ll explore what the WHIM is, why it matters, and how the universe basically gaslit us for 30 years.