What is Planet X and 9?

Planet 9 (or X) could provide answers to some of the more interesting anomalies in our solar system, but it’s not the only possible explanation.

Sources:
1. “Rogue Planets” – Space (dot com)
2. “History of Planetary Discovery” – NASA
3. “Discovery of Neptune” – KTH Royal Institute of Technology
4. “Pluto and the Developing Landscape of Our Solar System” – International Astronomical Union
5. “Caltech Researchers Find Evidence of a Real Ninth Planet” – Caltech

[mrgrumpy]

Primordial black holes... new irrational fear unlocked 😅 Imagine space being a gravitational mine field and our spacecrafts falling into those while we're minding our own business cruising the cosmos at Warp 9 or whatever. Yikes.

[mhjabbari]

Thanks, I liked the one that suggested that our solar system adopted Planet 9. It's kinda cute 🤗

[Astristul]

I'm glad #Starfield made #justiceForPluto and included it (along Charon, its Moon) in our Solar System! 🙂

[doughilton]

Honest question - for requirement #3 for being a planet - it has to clear it's neighborhood - Jupiter does not technically meet this requirement with the Trojan asteroids which are at Jupiter's Legrange Points - L4 and L5. How do these reconcile?

[mojette]

A large gaseous planet at the outskirts of the solar system? 🤔 For some reason, I had this idea in my brain that any planet or dwarf planet on the outskirts of the system must be a (small) terrestrial one, but idk where I got that idea from

[ixdmi]

this deserves more attention nice work 🤍