I've been a long-time fan of Zecharia Sitchin's idea of there being a 12th Planet.
Not so much because I am convinced, but just because I find the possibility, entertaining. All the alien and other-worldly ideas are intriguing, in the extreme!
Where would we be without them? No Captain Kirk - War of the Worlds - Buck Rogers - Battle Star Galactica - Q Continuum... no Area 51!
For me, it all started of course when I was 10 or so and I was introduced to the mystery of the "wheel within a wheel" (Ezekiel 1:16), and all those 1950's movies added on.
Then the library gave me Poe's The Gold Bug. And library after library revealed other mysteries; codes, ancient games, the Plains of Nazca.
And questions like: How did the Easter Islanders put those rock hats on top of those statues? How did the stones in Egypt, Central & South America get lifted up, and how did they make them fit so tight that you can put a knife blade between?
Anyhow, back to the 12th Planet...
Now, hard-fact and science tell me there is no
12th Planet, Tyche, Planet X, Nemesis So... if it's true, I accept that. Why? Because I still have 6EQUJ5
:o)