No, exobiology is the “study” of extraterrestrial life. It holds the distinction of being the only “branch of science” that, so far, has nothing to study.
Wrong.
I suppose I shouldn’t say it’s wrong, seeing as how there seem to be a dozen or more different definitions for the word.
Most of those definitions include the phrase, the study of the origins of life in the universe. That pretty much covers the original question, if you trace this mini-thread back far enough on this thread.