Meghnad Saha is widely regarded as the father of Indian astrophysics. He made significant contributions to the field, including his work on stellar atmospheres and the Saha equation.

Subrahmanyan Chandrasekhar is renowned for his work on black holes and gravitational collapse. He received the Nobel Prize in Physics in 1983 for his contributions to the study of stellar structure and evolution.

Jocelyn Bell Burnell, an Indian-born astrophysicist, is known for her discovery of pulsars. She made this groundbreaking discovery while working as a research student at the University of Cambridge.

Homi J. Bhabha is known for his work on cosmic rays. He made significant contributions to the field, including his development of the Bhabha scattering cross-section.

Subrahmanyan Chandrasekhar is known for his work on stellar evolution. He made significant contributions to the field, including his work on the Chandrasekhar limit.

Jayant Narlikar is known for his work on the origin and evolution of galaxies. He made significant contributions to the field, including his work on the steady-state theory.

George Gamow is known for his work on cosmology and the early universe. He made significant contributions to the field, including his work on the Big Bang theory.

Abhay Ashtekar is known for his work on black hole physics. He made significant contributions to the field, including his work on loop quantum gravity.

Kip Thorne is known for his work on gravitational waves. He made significant contributions to the field, including his work on the detection of gravitational waves.

Subrahmanyan Chandrasekhar is known for his work on the structure and evolution of stars. He made significant contributions to the field, including his work on the Chandrasekhar limit.

Edwin Hubble is known for his work on the formation and evolution of galaxies. He made significant contributions to the field, including his discovery of the Hubble constant.

George Gamow is known for his work on the origin and evolution of the universe. He made significant contributions to the field, including his work on the Big Bang theory.

Subrahmanyan Chandrasekhar is known for his work on the properties of neutron stars. He made significant contributions to the field, including his work on the Chandrasekhar limit.

Albert Einstein is known for his work on the theory of relativity. He made significant contributions to the field, including his development of the general theory of relativity.

Roger Penrose is known for his work on the physics of black holes. He made significant contributions to the field, including his work on the Penrose-Hawking singularity theorems.