Hello Ganga Malleshe

Aerospace engineers and aeronautical engineers share a lot of common duties. The main difference between these two professions is that aeronautical engineering is a specialization within aerospace engineering. Workers in aeronautical engineering often work exclusively with aircraft, while aerospace engineers may also work with weapons or spacecraft; and typically earn a higher salary than aeronautical engineers.

So I would suggest you to go for Aerospace Engineering, as you will get to learn more and it will help you more. Also studies in IIT is much better than TS and would benefit you if you want to study more and also during placements.

Hope it helps you.