Revelation 21:1

Chapter 21 - A new heaven and earth

1  And I saw a new heaven and a new earth: for the first heaven and the first earth were passed away; and there was no more sea.

At the time of the second resurrection and the judgment, John also sees a new heaven and a new earth. This is still the same planet because scripture says in several passages that the earth is without end. The Greek word used for “passed away” can also be used for changing from one condition to another. The earth and all creation were completely renovated by fire.

Ephesians 3:21  Unto him be glory in the Church by Christ Jesus throughout all ages,  world  without end. Amen.

Psalms 78:69   And he built his sanctuary like high palaces, like  the earth which he hath established for ever.

  Ecclesiastes 1:4  One generation passeth away, and another generation cometh: but  the earth abideth for ever

As the earth and its atmosphere were changed by water during the time of Noah, the earth and atmosphere will be renovated by fire before its eternal state. The verse says there was no more sea. This may just mean no more Mediterranean sea, or it could mean that there will again be only one continent on the earth and the oceans will be outside of the landmass like they were before the earth was divided in the days of Peleg (1 Chronicles 1:19). The scriptures say the earth will always have seedtime and harvest and for this to happen oceans are likely to be required (Genesis 8:22). Of course I could be wrong.

2 Peter 3:12  Looking for and hasting unto the coming of the day of God, wherein  the heavens being on fire shall be dissolved, and the elements shall melt with fervent heat?

13  Nevertheless we, according to his promise, look for  new heavens and a new earth, wherein dwelleth righteousness.