Summary: The interstellar medium (ISM) is a tenuous gas which collapses in a matter of a 1-10 million years to produce stars. In this process, its chemical evolutions can take place and simple atomic species may combine togetherto produce many important organic molecules, such as amino acids (glycine, alanine etc.). Even the formation of the components of DNA molecules cannot be ruled out. We discuss how we combine the hydrodynamical and chemical evolutions in the gas and grain phases to produce these important biomolecules. We thus believe that such formations are generic in most of the star forming regions. Whether they would further evolve into living forms will depend on the habitable zone of the newly born star and the properties of the host planet.
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(*) Prof. Sandip K. Chakrabarti received his Ph.D. from the University of Chicago in 1985 and went to California Institute of Technology as a Tolman Fellow. He has been associated with ICTP since 1987 first as a post-doctoral fellow (1987-1988), then as a regular associate (1990-1997) and subsequently, as a Senior Associate (2003- present). He was at NASA/Goddard Space Flight Centre for a year as a Senior research fellow. He is currentlya Full Professor and Head of the Astrophysics & Cosmology Department of S.N. Bose National Centre for Basic Sciences and the Founder head of the Centre for Space Physics. He has written over 300 research articles in Journals and proceedings and written or edited several books. He produced 11 Ph.D. students so far on various topics. His Research interest ranges from Hydrodynamics around compact stars to Astrobiology.

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