Indian Institute of Science

Hello Utsav Sarkar, yes indeed, for getting admission in postgraduate course in engineering many colleges have prescribed GATE as the qualifying examination for giving admissions. Now this examination is conducted for many subjects that are available for doing postgraduate studies. A student has to select the subject of choice for the subject in which he desires to study post graduation. You have rightly concluded that you will have to appear for the concerned paper of GATE for getting admission for M.Tech in aerospace engineering. Best wishes to you.

Candidates who are desirous to join the Undergraduate and Dual Degree Programmes offered by IIST are required to apply separately to IIST through the online application portal of IIST and follow the steps. The JEE Advanced is only the criteria for getting admission here. The minimum eligibility criteria for JEE Advanced are given below. JEE Advanced criteria for general candidate: At least 20% marks in aggregate and at least 5% marks in each of the three subjects Physics Chemistry and Mathematics).

Hello,
Astrophysics is really a specialized branch of physics and the knowledge of certain areas of physics is a must. Done your graduation in engineering in a civil branch which is not actually related to physics or definitely astrophysics. How to work to help you I am attaching a link that will give you all the required information about different eligibility conditions for the different courses that are conducted by the Indian Institute of Science in Bangalore. https://www.shiksha.com/university/indian-institute-of-science-Bangalore-22350/admission
Best wishes to you.