Science

Hi,
There are many modes through which you can join ISRO as Scientist or Engineer. After class 12th or during class 12th, you can appear for IIST exam (Indian Institute of Space Science and Technology (IIST), Trivandrum). IIST graduates above a certain pass percentage cut off in final B Tech exam are directly absorbed in ISRO system as Scientist/Engineer -SC grade. One can also join ISRO after finishing B-Tech from university system. For this they have to appear for ISRO centralized recruitment. The advertisement for this is often published in national newspapers. You can also join ISRO after completing M.Sc, M Tech and Ph.D in Science subjects like Physics, Maths, Electronics, Geology, Geophysics etc. Advertisement for such positions also given in national newspapers.

Eligibility Criteria for TIFR GS 2019
Physics
For Ph.D. M.Sc. /M. S. in Physics, or equivalent, on completion of Programs (s) of duration not less than 5 years in total
For I-PhD: M.E. / M.Tech. / B.Sc. / B. S. / B.E. / B.Tech. /B. Chem. In Physics, Engineering Physics, or equivalent degree, on completion of programme (s) of duration not less than 3 years in total; any other degree in Science/Engineering/Medicine, or equivalent, on completion of programme (s) of duration not less than 3 years in total. In addition, I-PhD candidates with not less than four or more years of university education who clear the written test may be considered by TCIS for their Ph.D. programme
For more detailed information visit the below Shiksha link:
https://www.shiksha.com/university/tata-institute-of-fundamental-research-Mumbai/tifr-gs-exam