Anamaría Font is one of the 2023 winners of the international l'Oréal-UNESCO prize. Professor of Physics at the Central University of Venezuela, Anamaría Font is renowned for her work in theoretical particle physics, and more specifically for developing the theory of superstrings. This theory provides a unified and coherent description of nature's elementary particles. Her research has made it possible to investigate the consequences of the theory for the structure of matter and quantum gravity, which are also relevant to the description of black holes and the first instants after the big bang.