Rosemary Mosco is a science writer and artist. She is the author of the science webcomic Bird and Moon (birdandmoon.com) and makes the urban nature webcomic Your Wild City (yourwildcity.com) with Maris Wicks. Science Comics: Solar System is her first graphic novel with First Second. Jon Chad was born and raised in Vermont. After completing the BFA sequential art program at Savannah College of Art and Design, he moved back to Vermont where he now works at the Center for Cartoon Studies teaching screen-printing and bookmaking. He is the author of Leo Geo and His Miraculous Journey Through the Center of the Earth, Leo Geo and the Cosmic Crisis, and Science Comics: Volcanoes.