Estel Blay Carreras, the scientist who will lead an Arctic expedition simulating a mission to Mars

Estel Blay Carreras, the scientist who will lead an Arctic expedition simulating a mission to Mars

Estel Blay Carreras, 39, has dreamed of becoming an astronaut since childhood. More than half of girls who aspire to a career in science give up in adolescence, but that wasn’t the case for her. She turned a fantasy into a professional future. She studied aerospace science, earned a doctorate, and held several jobs. Today, Blay Carreras — who lives in a residential neighborhood of Spain’s Sitges with her family and two hamsters — greets us with …