Dr. M. K. Vainu Bappu was an Indian astronomer who made significant contributions to the study of cometary tails. He conducted extensive observations of comets and published several papers on the subject.

The Vainu Bappu Telescope, located at the Kavalur Observatory in India, was used to study the comet Hale-Bopp in 1997. It is a 2.34-meter reflecting telescope that is used for astronomical observations.

The Indian Institute of Astrophysics (IIA) is a premier research institution in India that conducts research in various areas of astronomy and astrophysics, including cometary tails and phenomena.

Comet ISON was a sungrazing comet that was studied by Indian scientists during its close approach to the Sun in 2013. It was observed using various telescopes and instruments, including the Vainu Bappu Telescope.

Dr. Raghunandan Srinivasan, an Indian scientist, led the team that discovered the first evidence of water vapor in the tail of a comet. This discovery was made using observations from the Vainu Bappu Telescope.

The Cometary Tail Mass Spectrometer (CTMS) was an instrument that was used to study the composition of cometary tails during the Deep Impact mission. It was designed to measure the composition of ions and neutral gases in the tail of comet Tempel 1.

Dr. T. K. Das, an Indian scientist, is known for his work on the modeling of cometary tails. He has developed several models to explain the structure and dynamics of cometary tails.

Rosetta was a spacecraft that was sent to study the comet Churyumov-Gerasimenko. It was launched in 2004 and arrived at the comet in 2014. Rosetta conducted extensive observations of the comet, including its nucleus, coma, and tail.

Dr. Amitabh Ghosh, an Indian scientist, was part of the team that discovered the first evidence of organic molecules in cometary tails. This discovery was made using observations from the Infrared Space Observatory (ISO).

Deep Impact was a spacecraft that was sent to study the comet Tempel 1. It was launched in 2005 and arrived at the comet in 2005. Deep Impact conducted several experiments, including a controlled impact of a probe into the comet's nucleus.

Dr. J. S. Bagla, an Indian scientist, is known for his work on the study of cometary dust. He has conducted extensive research on the composition and properties of cometary dust particles.

Rosetta was a spacecraft that was sent to study the comet 67P/Churyumov-Gerasimenko. It was launched in 2004 and arrived at the comet in 2014. Rosetta conducted extensive observations of the comet, including its nucleus, coma, and tail.

Dr. S. N. Biswas, an Indian scientist, is known for his work on the study of cometary plasma. He has conducted extensive research on the composition and properties of cometary plasma.

SOHO (Solar and Heliospheric Observatory) was a spacecraft that was sent to study the comet Hale-Bopp. It was launched in 1995 and arrived at the comet in 1997. SOHO conducted extensive observations of the comet, including its nucleus, coma, and tail.