sir,i am kumar gaurav studing in class 12.i want to study aerospace engineering.what should i do and which competitive exams i must give?actually,my first priority is aerospace and second priority is robotics?if i not able to get aerospace at b.tech level then can i have both option of aerospace and robotics in m.tech after b.tech in mechnical. sir please help me.also i want to know which is better aerospace engineering or robotics.sir i also want to work at NASA.sir it is very nessesary for me. thank you