Harinder Singh Ahluwalia is an Indian astronomer who has made significant contributions to the study of nebulae interactions.

Govind Swarup is an Indian astronomer who played a crucial role in the discovery of the Herbig-Haro objects.

Harinder Singh Ahluwalia used the Giant Metrewave Radio Telescope (GMRT) to study nebulae interactions.

Subrahmanyan Chandrasekhar is an Indian astronomer who is known for his work on the formation and evolution of planetary nebulae.

Harinder Singh Ahluwalia studied the Helix Nebula using the GMRT.

Meghnad Saha is an Indian astronomer who is known for his work on the interaction between supernova remnants and molecular clouds.

Harinder Singh Ahluwalia observed the interaction between the Helix Nebula and the surrounding interstellar medium in an H II region.

Subrahmanyan Chandrasekhar is an Indian astronomer who is known for his work on the dynamics of interacting galaxies.

Subrahmanyan Chandrasekhar studied the Cartwheel Galaxy to understand the dynamics of interacting galaxies.

Govind Swarup is an Indian astronomer who is known for his work on the formation and evolution of jets in active galactic nuclei.

Govind Swarup used the Giant Metrewave Radio Telescope (GMRT) to study the jets in active galactic nuclei.

Meghnad Saha is an Indian astronomer who is known for his work on the interaction between galaxies and their intergalactic medium.

Meghnad Saha studied the Andromeda Galaxy to understand the interaction between galaxies and their intergalactic medium.

Subrahmanyan Chandrasekhar is an Indian astronomer who is known for his work on the formation and evolution of star clusters.

Subrahmanyan Chandrasekhar studied the Pleiades star cluster to understand the formation and evolution of star clusters.