HOW CAN I BECOME COSMOLOGIST,AND WHAT TO STUDY AFTER +2 TO BECOME COSMOLOGIST,WHAT ARE THE EXAMS I HAVE TO TAKE .KINDLY INFORM
You will have to earn a bachelor's degree in physics, astronomy, astrophysics, mathematics, or engineering with a focus in a relevant area such as aerospace engineering is typically the minimum requirement to get an entry-level job in cosmology, such as Research Assistant.
I hope this helps.