Legend has it that somewhere beyond Neptune and Pluto, there is a ninth planet, with a mass that is five times greater than Earth’s. Planet Nine, also known by its more ominous name of Planet X, is shrouded in mystery. Some people even believe that this planet is the reason the dinosaurs died.
But what if we were able to close this case once and for all, and figure out if Planet Nine is the real deal? How did it get there in the first place?And how did we finally crack this planetary puzzle?

Transcript and sources:
Subscribe to our second channel called “How to Survive”:

Can you translate this episode into another language? Add subtitles and we will link your YouTube channel in the description:

Watch more what-if scenarios:
Planet Earth:
The Cosmos:
Technology:
Your Body:
Humanity:

T-shirts and merch:
Suggest an episode:
Newsletter:
Feedback and inquiries:

What If elsewhere:
Instagram:
Twitter:
Facebook:
What If in Spanish:
What If in Mandarin:
Podcast:

What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure through time, space and chance while we (hopefully) boil down complex subjects in a fun and entertaining way.

Produced with love by Underknown in Toronto:

source