1. Yervant Terzian was the Tisch Distinguished Professor Emeritus in Cornell University's Department of Astronomy, which he chaired between 1979 and 1999.

1. Yervant Terzian was the Tisch Distinguished Professor Emeritus in Cornell University's Department of Astronomy, which he chaired between 1979 and 1999.
Yervant Terzian was born on February 9,1939, in Alexandria, Egypt to a Greek mother, Maria, daughter of a fisherman, and an Armenian father, Bedros Terzian, a merchant who survived the Armenian genocide.
Yervant Terzian then emigrated to the United States and enrolled at Indiana University Bloomington.
Yervant Terzian received his master's degree in 1963 and completed his Ph.
Between 1965 and 1967 Terzian worked as a research associate at the newly built Arecibo Observatory in Puerto Rico, managed by Cornell University.
Yervant Terzian joined the Cornell University faculty in 1967 as assistant professor of astronomy.
Yervant Terzian became associate professor in 1972 and professor in 1977.
Yervant Terzian was Chair of the Astronomy Department for two decades, between 1979 and 1999.
Yervant Terzian was named David C Duncan Professor in the Physical Sciences in 1999 and later Tisch Distinguished Professor.
In different years, Yervant Terzian was visiting professor at University of Montreal, University of Thessaloniki, and University of California, San Diego.
Between 1996 and 2015 Yervant Terzian was the director of the NASA New York Space Grant Consortium at Cornell, which aimed to enhance science education.
Yervant Terzian was involved in planning to construct the Square Kilometer Array giant radio telescope.
Yervant Terzian's research focused on the physics of the interstellar medium, galaxies, and radio astronomy.
Yervant Terzian studied the physics of the stellar evolution, planetary nebulae, hydrogen gas between galaxies and the presence of unseen matter in intergalactic space.
Yervant Terzian's first wife, Araxy, was an Egypt-born Armenian.
Yervant Terzian died at his home in Ithaca, New York, on November 25,2019, after a long illness.
Yervant Terzian was buried at Pleasant Grove Cemetery in Ithaca.
Yervant Terzian was the editor of seven books, most prominently Carl Sagan's Universe.
Yervant Terzian was a member of a number of organizations, including the International Astronomical Union, the International Union of Radio Science, and the American Astronomical Society.
Yervant Terzian was a Foreign Member of the Armenian Academy of Sciences, a fellow of the American Association for the Advancement of Science.
Yervant Terzian was a founding member and Co-President of the Armenian Astronomical Society.
Yervant Terzian was a member of the Hellenic Astronomical Society.
Yervant Terzian founded Armenian National Science and Education Fund, a project that is part of the Fund for Armenian Relief.
Yervant Terzian received honorary doctorates from a number of universities: Indiana University, Yerevan State University, University of Thessaloniki, Union College.