Aeronautical engineering is one of the most challenging branches of engineering. It has a wide scope of growth in the field of engineering. This field is concerned mostly with the technical as well as the mechanisms of the flying aircrafts. There are many options you can opt, It depends on your interest You can go for the higher study  in Master of Technology (M.Tech) in Aerospace Engineering & M.E in Aeronautical Engineering Or you can go for MBA in your desired field.

If you wish to go any paticular field then let me know, I can help you better.

Good Luck!