Kathryn D. Sullivan is a NASA astronaut (retired), former Under Secretary of Commerce for Oceans and Atmosphere of the National Oceanic and Atmospheric Administration (NOAA), and an inductee in the Astronaut Hall of Fame.

Michael J. Rosen is the author of some 150 books for readers of all ages, including A Ben of All Trades: The Most Inventive Boyhood of Benjamin Franklin, illustrated by Matt Tavares; A Tale of Rescue, illustrated by Stan Fellows; and four volumes of haiku.

Although his imagination has soared in many directions and genres, the one he’s never considered is up: a step stool is his maximum height, and a sheet of black construction paper on the floor makes him dizzy. Michael J. Rosen lives in the Appalachia foothills of Ohio, USA, where he also works as a painter, sculptor, printmaker, and companion animal to a cattle dog named Chant.