Other forms: cosmologists
A cosmologist is a scientist who studies the universe. If you hope to become a cosmologist one day, you'll want to take a lot of astronomy classes in college.
It's easy to confuse the words cosmologist and cosmetologist, though the jobs themselves are completely different. A cosmologist focuses her studies on the structure and history of the entire universe — how it formed, how it's changed, and what exists within it. A cosmetologist, on the other hand, is an expert at hair styling and applying makeup. The Greek roots of cosmologist are kosmos, "order or orderly arrangement," and logia, "discourse or dialog."