Astrosat is a multi-wavelength space observatory that will study a wide range of astronomical objects, from stars and planets to galaxies and quasars.

Subrahmanyan Chandrasekhar was an Indian-American astrophysicist who won the Nobel Prize in Physics in 1983 for his work on the theory of white dwarf stars.

ISRO is the Indian space agency that is responsible for the country's space program. It was founded in 1969 and has since launched numerous satellites and spacecraft, including the Chandrayaan-1 and Mangalyaan missions.

The GMRT is located near the city of Pune in Maharashtra, India. It is an array of 30 fully steerable parabolic radio telescopes, each 45 meters in diameter.

Subrahmanyan Chandrasekhar was an Indian-American astrophysicist who won the Nobel Prize in Physics in 1983 for his work on the theory of white dwarf stars. He also developed the theory of black holes, which was later confirmed by observations.

Ashoke Sen is an Indian physicist who is known for his work on the theory of cosmic inflation. He is a professor at the Harish-Chandra Research Institute in Allahabad, India.

B. P. Abbott is an Indian-American physicist who is credited with discovering the first evidence of gravitational waves. He is a professor at the Massachusetts Institute of Technology (MIT) in Cambridge, Massachusetts.

Arvind Borde is an Indian-American physicist who is known for his work on the theory of supersymmetry. He is a professor at the University of California, Santa Barbara (UCSB) in Santa Barbara, California.

Paul Steinhardt is an American physicist who is credited with developing the theory of the multiverse. He is a professor at Princeton University in Princeton, New Jersey.

Abhay Ashtekar is an Indian-American physicist who is known for his work on the theory of quantum gravity. He is a professor at the Pennsylvania State University (PSU) in University Park, Pennsylvania.

Saul Perlmutter is an American astrophysicist who is credited with discovering the first evidence of dark energy. He is a professor at the University of California, Berkeley (UCB) in Berkeley, California.

Tanmay Vachaspati is an Indian-American physicist who is known for his work on the theory of cosmic strings. He is a professor at the Arizona State University (ASU) in Tempe, Arizona.

James Gunn is an American astronomer who is credited with discovering the first evidence of gravitational lensing. He is a professor at Princeton University in Princeton, New Jersey.

Stephen Hawking was a British physicist who is known for his work on the theory of black hole evaporation. He was a professor at the University of Cambridge in Cambridge, England.

Georges Lemaître was a Belgian priest and astronomer who is credited with developing the theory of the big bang. He was a professor at the Catholic University of Leuven in Leuven, Belgium.