Yet, now that man is travelling across space, the conflict will be taken with him and so, again, the meaning of 'earth', in that case, must be extended outside of this world.
Wherever man is, the conflict between Good and evil, will continue.
I mention these points as regard to 'earth' so that my contention that the earth, when the anti-christ comes, will remain loyal to The Almighty, remains a distinct possibility.
If that is to be the case--that earth will remain faithful--then the meaning of 'earth' in Scripture and Tradition must have a much wider meaning.