It is irrelevant if it is literal or metaphorical, for the New Heavens and New Earth that New Jerusalem descends upon have neither literal, nor metaphorical death, sorrow, or pain. And the former heavens and earth, both literal and metaphorical are passed away, both literally and metaphorically.
Furthermore, we are given no indication as to how large New Earth is. It might be bigger than the present sun for all we know. What we do know is that it is not this earth we are presently dwelling in.
I have been reading your posts. You have much good information to share, most of what you write seems correct to me.
If I may elaborate somewhat on this subject, the creation which we currently reside in, which contains all the elements, gravity, time, universes,stars, ect, is described in the bible. It is the sea of glass which sits in front of the throne, AKA , Gods footstool.
One thing to keep in mind is the stars and such are sometimes referred to as "earth", and not just this planet alone. And also in Genesis the "mountains" and "dry land" are the material things that were formed in the "sea", when creation was just beginning. You can use these indicators elsewhere in the bible and you will start to unlock more information about what is happening and going to happen.
It is this same "sea" that is destroyed by fire in Revelation, this is what those verses in 2Peter is about. Yes, satans seat is attached to the material realm, and this is how he is going to be defeated. This is going to be used as a trap for all the evil things.
If you want to get a little deeper, the four rivers in Genesis are actually the forces holding our material plane apart, they are the four angels which the firmament rests upon in Ezekiel.
Where the river issues from the throne and parts in four is where time starts. The sides are indicative of time and the bottom is expansion. Mentally it describes a pyramid with God at the top. This is the capstone which the builders rejected. They await their god to place in the temple, to usurp the true God.
2Thessalonians2: 3 Let no man deceive you by any means: for that day shall not come, except there come a falling away first, and that man of sin be revealed, the son of perdition; 4 Who opposeth and exalteth himself above all that is called God, or that is worshipped; so that he as God sitteth in the temple of God, shewing himself that he is God.
Acts 4: 11 This is the stone which was set at nought of you builders, which is become the head of the corner. ( meaning has come down to earth)
The Garden and Eden was not on this material plane. Man was a higher being before the fall. His job was to be caretaker or have the job that the cheribum now hold. This is why the Tree of Life is still there along that river which flows from the throne.
The New Jerusalem will not be made of the same construct. Meaning, there will not be atoms and carbon life forms and things. No more starts and planets.
It will be more complex, because there are more foundations, more variables. It will be awesome.