Hello there,
It's great to hear from you that you are interested in the most demanding engineering stream of aerospace engineering.
Which branch to choose after the higher secondary education is the most wondering question in the beautiful minds of students. Aerospace engineering is just great for those who want to sneak into the aviation industry and make people fly.

You can definitely do aerospace engineering after your 12th in any one of the prestigious institutions like Indian institute of space science and technology, Thiruvananthapuram, IIT BOMBAY, IIT KHARAGPUR, IIT MADRAS etc.

However for those colleges you will have to be prepared to  face JEE mains or advance. Hope my answer solved your query. Thank you so much for reading and best wishes for your future.