Aerospace Engineering

You can definitely go for post graduation degree ,I.e. ms or m.tech either from India or abroad for doing aerospace engineering course specialization. Aerospace engineering involves the very basics of Machine Design, Heat and mass transfer, fluid mechanics which are the very basic subjects of mechanical engineering so it would be a good degree to apply the learnings of your previous degree. For more information visit
http://grad-schools.usnews.rankingsandreviews.com/best-graduate-schools/top-engineering-schools/aerospace-rankings

Follow this link for personal interaction:- http://www.rvce.edu.in/contact-us
All the best.

For being a Commercial Pilot you should be from science background.
Fee for whole training will cost you around 40 lacs in India and 60 abroad. Career opportunities depends upon your flying hours and rating done on different stages.

It depends on how much you have scored in jee mains and what is your category.for eg. being from general category you must have at least 200 marks or above to get a good nit.