Born in the Bessarabian locality of Vertiujeni, now part of Moldova, Mironov was from a family which took refuge in southern Romania following the region's second occupation by the Soviet Union before the end of World War II. He attended the Nicolae Bălcescu High School in Craiova and then he studied Mathematics at the University of Bucharest. His debut was in 1971 in the number 387 of the Colecţia de Povestiri Ştiinţifico-Fantastice magazine, having published two sci-fi stories Performanţă ciudată and Prea târziu. For the following decades, he published several dozens of stories, most of them featured in the Întâmplări din Veacul XXI and Alte întâmplări din Veacul XXI anthologies. Between 1969 and 1976, he traveled to various "paleoastronautics" sites studying the hypothesis that intelligent extraterrestrials have visited Earth in the past, this resulting in the book Enigmatic, pămîntul, published in 1977. In 1979, Mironov joined the state-owned Romanian Television and Romanian Radio, which were then under a single administration. He was employed there until 1991, and again between 1996 and 2001. According to Mironov's own statement, the communist regime sidelined him and sent him to work for the Radio company after his explicit refusal to broadcast praises of President Nicolae Ceauşescu. He directed and produced several documentary films, including the 1984 Din soare, gheaţă şi căldură, and the 1992 Universul cunoaşterii. In all, Mironov produced around 2,000 broadcasts for the national television and radio stations. His successive shows were also granted prizes from various cultural institutions. Alexandru Mironov played an active part in the anti-communist Romanian Revolution of 1989, when opened the first free Romanian Radio broadcast. According to his own statements, he persuaded the Romanian Army soldiers not to storm into the main Radio building in Bucharest. Following the fall of communism and until his resignation in 2005, he was a member of the National Salvation Front and of its successor party, the PSD. He also worked as a Counsel for Romanian President Ion Iliescu, and claims to have played a part in ensuring his election victory during the 1992 suffrage. Between 28 August 1993 and 11 December 1996, he was the Minister for Youth and Sport in the Nicolae Văcăroiu cabinet. While in office, Mironov inaugurated a state program which allowed some 13,000 honored students to visit foreign countries. Starting December 2004, he was named the head of the Institute of the Romanian Revolution. Mironov left the PSD at the same time as his colleague Petre Lificiu, and motivated it by saying that Romania needed a real left-wing party. Alleging that the "almost all leaders are millionaires in dollars", Mironov stated that he still supported former PSD leader Iliescu, showing himself ready to join a potential new left-wing party founded by the latter. Mironov joined the relatively new PSR, created and led by Valentin Adem. In February 2008, Adem declared to the press that Mironov had been proposed as the PSR's new president, its main candidate in the scheduled legislative election, as well as contender for the office of Mayor of Bucharest.
Published books
Enigmatic, pămîntul
Proiecte planetare - with Alexandru A. Boiu
Întîmplări din mileniul III
Cronici metagalactice - with Ştefan Ghidoveanu
Cronici microelectronice - with Ştefan Ghidoveanu and Mihai Bădescu