Rosemary Mosco is a science writer and artist, and she's passionate about sharing her love for the natural world. She writes and draws the science webcomic Bird and Moon and made the urban nature webcomic Your Wild City in collaboration with fellow First Second author Maris Wicks. If she could explore any place in the solar system, she would travel to Jupiter's moon Europa. 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 White River Junction, 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 with First Second. He also drew the art package for The Jetsons pinball machine from The Pinball Company and Spooky Pinball.