You can be both creationist and an evolutions. You believe that God created the universe and used evolution to create life to populate the earth.
For the serious student, they are mutually exclusive. The Bible tells us the earth started out cool. Evolution teaches it started out hot. Creation teaches the earth will end by burning. Evolution teaches it will end cold.
You are conflating evolution with cosmology.
The study of evolution is the study of living things on this Earth. The study of evolution can tell us nothing of how the Earth will end, though it might suggest the human species will be extinct millennia before that happen.
Most likely, the Earth will end in a huge fireball as the sun goes nova and consumes this solar system.
