To join isro which course is best after 12th?
As you know ISRO is one the the thing that makes us proud for getting into it you have following options
1 .IIST( Indian institute of space science and technology) this is a college funded and runned directly by ISRO if you are able to maintain good grades in college you are directly recruited by ISRO as scientist / engineer and admission in these college are based on jee advance rank generally you will make it in under 4.5 k rank .
2) after graduation ( btech ) ISRO separately conducts a test after which you are able to get in in following courses conducted by ICRB (isro centeral recruitment board)
a) Btech in computer science
b) Btech in mechanical engineering ( all sub branches included)
C ) Btech in electronics and communication
3) ISRO also visit finest institute like IITs NITs for on campus placements
Hope it helps.
