Dr. Alejandro has been involved in Light Pollution topics since the 90’s and has contributed with more than 100 scientific articles, many of them of great impact in this topic. He is the leader of the Cities at Night project, a citizen science project coordinated with NASA and other space agencies where the use of pictures taken by astronauts at the International Space Station is employed to raise awareness about the problems caused by light pollution. He gained his PhD in 2013 at the Complutense University of Madrid and now is working at the Environmental Sustainability Institute, in the University of Exeter.
He is also an advisor at the recently created Sky Quality Office at the Institute of Astrophysics of Andalusia (Spain). He is active member of several amateur Astronomy groups related to light pollution and European Research Networks (LoNNe), the Spanish national association against light pollution (Celfosc) and the European project Stars4all. In 2014 he was awarded the Dark Sky Defender Award for his leadership in Cities at Night.