Luna received his first literary prize in 1957 for his period tale La fusilación (The Firing Squad); set in the nineteenth century, the work followed the controversial 1956 execution of General Juan José Valle and 27 others.

Ramírez and Luna were joined by traditional folklore vocalist Mercedes Sosa for Cantata Sudamericana, a 1972 album which made the latter an iconic figure in the music of Argentina.

As a historian, contributed weekly editorials on current events for Clarín between 1964 and 1973, and as host of Hilando nuestra historia (Weaving Our History), an educational radio program, between 1977 and 1982.

[1] Offering up biographies on Presidents Roberto Ortiz (1978) and Julio Roca (Soy Roca, 1989), a comprehensive trilogy on the Perón years, and the pocket Breve historia de los argentinos (Brief History of the Argentines, 1993), among other books, he became known for his narrative style and pragmatic viewpoint on contentious events.

Luna has been honored with numerous Konex Awards, the highest distinctions in the Argentine cultural realm, since 1984 for his work as a historian, biographer and lyricist, as well as a French Ordre national du Mérite in 1988.