I'm just new here and i'd like to know the purpose of this website???????Ω
I have no clue what your question has to do with cosmology!
But the purpose or the website is given in the introductory post you were asked to read when you registered:
"Our mission is to provide a place for people (whether students, professional scientists, or others interested in science) to learn and discuss science as it is currently generally understood and practiced by the professional scientific community. As our name suggests, our main focus is on physics, but we also have forums for most other academic areas including engineering, chemistry, biology, social sciences, etc."
Separate names with a comma.