I am a student of 2nd year( doing btech in civil engineering). Is it possible for me to do my masters related to space science or space tech
Heyyy Sri....
As you are form civil engineering , you've very limited options to do it. Still you can check for the course that suits you and where civil engineering students are accepted , by checking requirements for various courses provided by IIST in below official link :
https://www.iist.ac.in/admissions/postgraduate/regular