The Earth will someday cease to exist. Period.

Assuming mankind is still around, either terra-bound or interstellar-based, it doesn't matter what the event is or when it happens, every religious group will say "I told you so" with some very loosely interprated texts or teachings.

Meanwhile - those of us who are sane - will realize it's just an asteroid, galaxy collision, sun implosion, etc, that is bound to happen through chance or time.