Board Thread:News and Announcements/@comment-265341-20150707210311/@comment-26472528-20150710225045

Benjohn132 wrote: Is there any hint in the show that might indicate that Earth might be a sentient living planet and that Rose might have rebelled against homeworld because she discovered the planet to be a living being as well and tht homeworld was hurting it the poor thing despite it's massive size? The Q/A session is over, sorry!

That's a pretty interesting theory, though it doesn't seem likely.