Hey,
It's quite disheartening that due to your financial conditions your dream of pursuing Aerospace engineering is yet not fulfulled. But you can still go for  Masters in Aerospace Engineering by clearing GATE that is Graduate Aptitude Test in Engineering. Indian Institute of Science offers this course but the fact that the best education in this field is provided by some top universities of USA where there is infrastructure and resources cannot be denied.But hard work and dedication always pays off and IISC is one of the best colleges in India as studying in USA is expensive if you don't get any scholarship.
Right now,it seems you are confused what you should go for.Well it is entirely your call. If Aerospace fascinates you,go for GATE and pursue your dream.
You can get the required details from the official website of GATE.
Hope this helps.
Best of luck!

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