Hi student,

Indian Institute of Space Science and Technology, Thiruvananthapuram takes admission into B.Tech programme on the basis of your JEE Advanced score. To take admission into IIST, you are required to give Joint Entrance Examination (Main) conducted by NTA to qualify yourself to appear for Joint Entrance Examination (Advanced) conducted by IITs and secure the minimum prescribed category-wise marks in JEE (Advanced).

Refer here for more info - Indian Institute of Space Science and Technology, Thiruvananthapuram Admission 2021: Eligibility , Registration, Fees, Selection Process (careers360.com)

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!