"I see skies of blue..."
(Info-Box to be redone)Earth (or "Earth Prime") is the shining heart of most Galactic politics home to tends of thousands of nations and some of the most influential military-political Powers/Factions in existance. Earth's exact dimensions and confines seem to defy the conventional limits of most other worlds and a few of the laws of physics, but no one seems to mind all that much. It is primarily inhabited by humans and other high mammals approaching sapiance, as well as countless other species.
One solution to space issues has been the Extended Earth concept, which includes entire continents, and a planet which somehow accomadates greater numbers without signifcantly increasing gravity beyond tolerable limit.