Class 12-science

yes, ofcourse. i have taken PCMB and planning to go for engineering field. go ahead all the best!!

there us no reason that is if u go for preparation there teach u start with basic

Dear Nikita,
Yes, you may pursue BMM. The stream doesn't really matter.

I think you don't have clear concept about that.
B.Sc is just Undergraduate degree where as PhD is doctors degree.
For PhD you have to first qualify different Jrf exams without which PhD is of no value . For sitting in exam of different Jrf( CSIR NET-JRF, DBT- JRF, ICMR-JRF ) of life sciences you must have post graduation degree in any subject of life science.
All the best.

Dear Ritu,
Good to hear from you.
You can choose any field , either of Engineering or Science to move towards to your aim. But NASA requires highest Qualifications like PhD or post Doc.
You can go for Electronics, Computer, Chemical, Mechanical, Mechatronics, Physics, Biophysics, Biology, Geology, Zoology .etc etc.

first, you need to pass 12th with physics chemistry and mathematics with 50% and more. you also need to have required eyesight and colour pass test. once you finish, you may apply for commercial pilot license i.e. cpl. the cost is around 15 lakhs. after completion successful training of minimum flying hours