"Amigos del IAC" at the Teide Observatory
It may interest you
Ramón Luis Valcárcel, Esteban González Pons, Alfred Rosenberg, Gabriel Mato and Rafael Rebolo during the opening of the exhibition "100 square moons" in the European Parliment
Autoridades políticas que han acudido a la inauguración del Paseo de las Estrellas de la Ciencia de La Palma
Relative sizes (Earth, sunspot, solar granulation)