They called it Planet Nine, not just because it would be the ninth planet (after Pluto was reclassified), but because no other explanation matched the data.
We’ve gone through old data, built new telescopes, and found strange things we didn’t even know we were looking for. And somewhere out there, whether it’s a planet, a cluster of objects, or just a cosmic prank, something is still pulling the strings.
00:00 - Intro
01:05 - The Clues That Started It All
04:42 - Simulations and Skeptics
08:12 - The Disappearing Evidence
11:50 - A New Infrared Dot Emerges
15:50 - A Rogue Dwarf Planet Disrupts the Story
20:08 - How Planet Nine Could Have Formed
23:43 - The Final Hunt – Vera Rubin and Beyond