which courses and exams do i need to do, for going in isro and nasa before and after class 12th?

UR QUESTION IS INCOMPLETE. MENTION WHICH CAREER U WANT IN SPACE AGENCY (ASTRO, SCIENTIST, ENGG. ETC) ?

Hi Yash, I have already answered your query, please check the link below: https://ask.shiksha.com/which-courses-and-exams-do-i-need-to-do-for-going-in-isro-and-nasa-before-and-after-class-12th-qna-1758563 Apart from this I would like to add that NASA from time to time conduct various Examination

Do engineering from the Field you want to do from some Good or Reputed College or from some government College. As ISRO Ever Year Conducts Entrance Exams for Engineering Graduates. After Clearing exam then you call for Interview and After Clearing Both then you get Selected in ISRO.