Theoretical evidence for a ninth planet beyond the orbit of pluto

Ethan Siegel · 94K views · 2016 · 1:10

Open on YouTube

Cosmology & astrophysicsother

Why the open web links it

Presents theoretical evidence for a ninth planet based on orbital patterns of distant solar system objects.

Linked by 5 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including bigthink.com, hi-news.ru, mesvilaweb.cat, bizsiziz.com, galaksiarsivi.com.