Isadore Epstein, Estonian-American astronomer and academic (born 1919)

Isadore Epstein was an astronomer. Epstein taught astronomy at Columbia University for 37 years. He completed his Ph.D. at Princeton University, following which he was appointed as an instructor at Columbia in 1950, assistant professor in 1953, associate professor in 1957, and professor in 1971. He was named professor emeritus in 1987. He served as acting departmental chairman in 1959.