The students who wants to work in NASA has to develop great interest in Mathematics and Science.

You must make keen interest in Astronomy and physics too.

You have to select any one of these subjects in the level of higher secondary and also in the level of graduation.

This will give you qualifications to get selected to be an Scientist.

NASA not only looks for a particular backgrounded people it will looks for the people with different backgrounds.

Like Microbiologists,Geologists,Physicists,electrical engineers. So you should decide what you want to become then puruse it as fas as you can and NASA is apt to be interested in that profession.

So after this Getting into NASA is the next step you need to make by applying for citizenship of US first of all.

Yeah so that's it. Best wishes. Thank-you.