Obviously for a capital city that's almost as large as the United States to exist the New Earth must be VERY large and much larger than the Earth we have and live on now. After all when John saw the new Jerusalem he saw that it was 12,000 stadia by 12,000 stadia or 1,500 miles.
So for such a large capital city the New Earth must be huge! Especially when there likely would be other cities on the New Earth the New Jerusalem will just be the capital city. How exactly will we be traveling through such a large Earth? Do you think cars and airplanes will exist? It would take an eternity just to walk that far and explore the many wonders of the New Heaven and the New Earth without modern technology.
Not to mention the exploration of the New Heavens. So just how large IS the New Earth? It has to be larger than the Earth we have now but just how much larger?
Here is something to think about.
John 4:7 There comes a woman of Samaria to draw water: Jesus said to her, Give me to drink. 8 (For his disciples were gone away to the city to buy meat.) 9 Then said the woman of Samaria to him, How is it that you, being a Jew, ask drink of me, which am a woman of Samaria? for the Jews have no dealings with the Samaritans. 10 Jesus answered and said to her, If you knew the gift of God, and who it is that said to you, Give me to drink; you would have asked of him, and he would have given you living water. 11 The woman said to him, Sir, you have nothing to draw with, and the well is deep: from where then have you that living water? 12 Are you greater than our father Jacob, which gave us the well, and drank thereof himself, and his children, and his cattle? 13 Jesus answered and said to her, Whoever drinks of this water shall thirst again: 14 But whoever drinks of the water that I shall give him shall never thirst; but the water that I shall give him shall be in him a well of water springing up into everlasting life. 15 The woman said to him, Sir, give me this water, that I thirst not, neither come here to draw.
Revelation 22:1 And he showed me a pure river of water of life, clear as crystal, proceeding out of the throne of God and of the Lamb. 2 In the middle of the street of it, and on either side of the river, was there the tree of life, which bore twelve manner of fruits, and yielded her fruit every month: and the leaves of the tree were for the healing of the nations.....17 And the Spirit and the bride say, Come. And let him that hears say, Come. And let him that is thirsty come. And whoever will, let him take the water of life freely.
Matthew 16:6 Then Jesus said to them, Take heed and beware of the leaven of the Pharisees and of the Sadducees. 7 And they reasoned among themselves, saying, It is because we have taken no bread. Mark 8:17 And when Jesus knew it, he said to them, Why reason you, because you have no bread? perceive you not yet, neither understand? have you your heart yet hardened? 18 Having eyes, see you not? and having ears, hear you not? and do you not remember? 19 When I broke the five loaves among five thousand, how many baskets full of fragments took you up? They say to him, Twelve. 20 And when the seven among four thousand, how many baskets full of fragments took you up? And they said, Seven. 21 And he said to them.....Matthew 16: 11 How is it that you do not understand that I spoke it not to you concerning bread, that you should beware of the leaven of the Pharisees and of the Sadducees? 12 Then understood they how that he bade them not beware of the leaven of bread, but of the doctrine of the Pharisees and of the Sadducees.
Along the same lines of thought. How is it so many do not understand and think the bride of Christ is a physical city with a physical river; called the river of life?
The New Jerusalem