There is definitely going to be a future Second Coming.
In 2 Thessalonians 1:7-10 Paul says Christ returns "in flaming fire" taking vengeance on those who do not know God.
Peter confirms this fact in 2 Peter 3:10-13.
This earth is going to burn, and be replaced by a new heavens and new earth.
He is going to be on the earth, but it will not be this rotten, sin-cursed earth.
The original source of modern Dispensational Theology is found below in this video I produced for YouTube. John Darby brought the doctrine to the U.S. about the time of the Civil War. It was later incorporated into the notes of the Scofield Reference Bible, and then spread like a virus through the evangelical Church in the U.S., especially Baptist churches.