David A. Aguilar is the author and illustrator of several books from National Geographic. His 13 Planets: The Latest View of the Solar System received the Eureka! Nonfiction Children's Book Gold Award from the California Reading Association. His writings are widely recognized for their ability to communicate the wonderment of science to enthusiasts of all ages. He is the originator of the Science Discovery program at the University of Colorado, Boulder; the popular host of the Harvard-Smithsonian Center for Astrophysics Observatory Nights program; and the past director of the Fiske Planetarium.