I call Overzealous Translation. Most cultures capable of imagining space travel call their planet of origin by a synonym for "soil" or "ground".
Of course, that's a significantly more boring interpretation, easily circumvented by having the various Earths be near-exact duplicates.
	
	
	
Of course, that's a significantly more boring interpretation, easily circumvented by having the various Earths be near-exact duplicates.

 
 

 
