• IIT Madras, Chennai
• NIT Trichy, Tiruchirappalli
• SRM Institute, Chennai
• PSG College, Coimbatore
• Indian Institute of science, Bangalore
• Institute of Fundamental Research, Tamil Nadu
• Loyola college, Nungabakkam, chennai
• Madras Christian College, chennai
• Vellore Institute of Technology, vellore
• Womens christian college
• Ethiraj college for women
• JNTU College of Engineering, Hyderabad.

Hello aspirant,

There is only one college in Tamil Nadu for MSc. Astrophysics. It is Mother Theresa Women's University, Kodaikanal. It is the only college offering MSc. in astrophysics. The college is only for women. However, despite this across India, there are colleges offering MSc. astrophysics. like, IISC, Thiruvananthapuram; Central University, Haryana; and also Delhi University.

For more information check the link below: https://university.careers360.com/colleges/list-of-universities-in-india?branch=Astrophysics

Hope this helps you,

Good luck, Thank you :)