There is another planet Earth in the heavens but, it is not visible.
“For since the beginning of the world men have not heard, nor perceived by the ear, neither hath the eye seen, O God, beside thee, what he hath prepared for him that waiteth for him” (Isaiah 64:4).
Without a doubt, if an meteor shower or asteroid belt was about to destroy this heaven and earth, and another earth was now visible, more than likely every human being alive would be lining up to get onboard ‘spacecraft’ to get to this other earth.
For those of us in the kingdom of God we have FAITH in the Salvation of God (John 3:16) believing the word of God that there is New Heavens and a New Earth (Isaiah 65:17) (2 Peter 3:13) (Revelation 21:1).
“Now [FAITH] is the substance of things hoped for, the evidence of things not seen” (Hebrews 11:1).
“While we look not at the things which are seen, but at the things which are not seen; for the things which are seen are temporal; but the things which are not seen are eternal” (2 Corinthians 4:18).