I am with the
FLEETADMIRAL on this one...
the home place of the Planet Earth or Terra Firma would denote the whole System and the Star (Sol)
as being the birthplace of all the local 'Terrestrials... to include Humans along with plants/animals/fish
So it is understood by us local Terrestials/Earthmen that the whole local Sun & system of gas planets & rocky planets that comprise our local solar
system would be named after the dominant lifeform in that system...
being known as a 'terrestrial' will only be a category denoting one's homeworld ...as new beings are revealed...
one would suppose that 90% of all independent lifeforms (with space travel abilities) would be evolved on terrestial planets... so the term
'terrestrial' would no longer serve as the definition of our Solar System
Each Solar System would refer to their own Star as a local 'Sun' or equivelent name
so...to define our System (home) we would invoke the dominant creature in that system...the beings that conquered the home planets nature & subdued
the planet to the subordinate name of Earth...
the Earth & the Earthlings that dominate this region of space ....
We are the 'Earthling' (
solar system) inhabitants...
which distinguishes humans from the plant/animal/aquatic kingdoms who share this planet
Humans are Earthlings = the Solar System is therefore 'Earthling'
other lifeforms on Earth are just Terrestial creatures/life...slang would be 'Terrans'
iow...'Earthling' is used as a Proper Noun, as well as an adjective and an adverb, as it were
edit on 5-12-2011 by St Udio because: (no reason
given)