The book of Revelation details it all.
It says that the earth will be recreated. It will be even more beautiful than it is now, with no more evil. Sickness, wars etc..
Ecclesiastes 1:4 "A generation is going, and a generation is coming, But the earth remains forever."
We are assured by Jehovah’s own words that “all the days the earth continues, seed sowing and harvest, and cold and heat, and summer and winter, and day and night, will never cease” (Genesis 8:22)
No ending date. It's forever.
At Isaiah 11:9 mention that the very earth will be filled the knowledge of Jehovah.