My son started talking about "terraforming Mars" and Europa when he was five. I think that's still one of his dreams.
But, I don't see how it presents a religious conflict. If one believes there's a God who put us here for a purpose, and made us special in His likeness, why wouldn't that purpose include preparing other planets for use as our habitats?
I believe in god and I don't think that god would mind us creating planets from the dead..
I know of no Christian religious teaching that addresses this or requires us to stay on Earth.