Complex sentence: Two possible names after the merge could be "Study of extraterrestrial life" (the common name) or (my preference) "Astrobiology": the study of the origin, evolution, distribution, and future of life in the universe.
Split into simpler sentences: Two possible names after the merge could be "Study of extraterrestrial life" (the common name) or "Astrobiology"-the science dedicated to it. I would use'Astrobiology': the study of the origin, evolution, distribution, and future of life in the universe.