He was accepted into the University of Buenos Aires, where he received a degree from the School of Natural and Exact Sciences.
That year, he premiered his first play, Las reglas del juego (The Rules of the Game) at the important San Martín Cultural Centre.
Moledo became well-known among local readers for his tales of science fiction, which were regularly published in magazines popular among young readers (El Péndulo and Minotauro), as well as in the cultural sections of leading Buenos Aires dailies such as Clarín and Página/12.
Some of the most notable among these articles were Agenda Científica and Un viaje por el universo (A Journey Through the Universe).
He also hosted Ciencia y Conciencia (Science and Conscience), a television program on the subject which aired on the public Channel 13, in 1989.