What is the proper word for 'Earth', as in 'Solar' and 'Lunar'? I cannot find this anywhere; I am guessing there is a word that starts with geo?
Technically this question is off topic and would belong in an astronomy SE, but the answers you probably are seeking are terrestrial or terran depending on whether it is a person or an object. Terran has been sorta scooped up by the Starcraft community though so terrestrial is used in almost all cases to my knowledge.
I think Terran is as good a word as any, as is Geo. Thinking of terms where Solar or Lunar are used.
Solar Gravity, Lunar Gravity, Terran Gravity, or Earth's Gravity.
Solar Magnetic Field, Lunar Magnetic Field (which, I'm not sure there is one), Earth's Magnetic Field or Geo-Magnetic Field is also used.
Earth's, Geo or Terran are the best 3 options I can think of. Non-Anthropomorphic is sometimes used to describe natural events on earth, but technically Non-Anthropomorphic doesn't mean earth it simply means not by human means.