The Giant Metrewave Radio Telescope (GMRT) is the largest optical telescope in India. It is located near Pune, Maharashtra and consists of 30 fully steerable parabolic radio telescopes, each with a diameter of 45 meters.

The Aryabhatta Research Institute of Observational Sciences (ARIES) is located in Nainital, Uttarakhand. It is a premier research institute in the field of astronomy and astrophysics in India.

The Indian Institute of Astrophysics (IIA) is located in Bengaluru, Karnataka. It is one of the leading research institutes in the field of astronomy and astrophysics in India.

The Vainu Bappu Observatory (VBO) is located in Kavalur, Tamil Nadu. It is a major astronomical observatory in India and is operated by the Indian Institute of Astrophysics (IIA).

The Giant Metrewave Radio Telescope (GMRT) is located near Pune, Maharashtra. It is a major radio telescope in India and is operated by the National Centre for Radio Astrophysics (NCRA).

The Tata Institute of Fundamental Research (TIFR) is located in Mumbai, Maharashtra. It is a major research institute in the field of fundamental research in India.

The Inter-University Centre for Astronomy and Astrophysics (IUCAA) is located in Pune, Maharashtra. It is a major research institute in the field of astronomy and astrophysics in India.

The National Centre for Radio Astrophysics (NCRA) is located in Pune, Maharashtra. It is a major research institute in the field of radio astronomy in India.

The Physical Research Laboratory (PRL) is located in Ahmedabad, Gujarat. It is a major research institute in the field of space and atmospheric sciences in India.

The Indian Space Research Organisation (ISRO) is headquartered in Bengaluru, Karnataka. It is the primary space agency of the Government of India.

The Vikram Sarabhai Space Centre (VSSC) is located in Thiruvananthapuram, Kerala. It is a major space research centre of the Indian Space Research Organisation (ISRO).

The Satish Dhawan Space Centre (SDSC) is located in Sriharikota, Andhra Pradesh. It is a major spaceport of the Indian Space Research Organisation (ISRO).

The U R Rao Satellite Centre (URSC) is located in Bengaluru, Karnataka. It is a major satellite manufacturing facility of the Indian Space Research Organisation (ISRO).

The Space Applications Centre (SAC) is located in Ahmedabad, Gujarat. It is a major research centre of the Indian Space Research Organisation (ISRO) that focuses on the development of space applications.

The National Remote Sensing Centre (NRSC) is located in Hyderabad, Telangana. It is a major research centre of the Indian Space Research Organisation (ISRO) that focuses on the development of remote sensing technologies.