I must not be on the more scientific news places then, I didn't start hearing about it until around last year--maybe the year before--, well after pluto got thrown out like last night's trash.
There's been "planet X" theories since the 50s
https://en.m.wikipedia.org/w/index.php?title=List_of_hypothetical_Solar_System_objects&diffonly=true#Planets
Happy cake day!
People tweeting stuff. We allow tweets from anyone.
RULES:
I must not be on the more scientific news places then, I didn't start hearing about it until around last year--maybe the year before--, well after pluto got thrown out like last night's trash.
There's been "planet X" theories since the 50s
https://en.m.wikipedia.org/w/index.php?title=List_of_hypothetical_Solar_System_objects&diffonly=true#Planets
Happy cake day!