Astrophysicist/educator Jeffrey Bennett, a winner of the American Institute of Physics Science Communication Award, is the author of more than a dozen books for children. Seven of his books have been selected for NASA's Story Time From Space Program, in which astronauts read books aloud from the International Space Station. Michael Carroll's art has appeared in books and magazines including National Geographic, Time, Smithsonian, Scientific American, Sky & Telescope, Astronomy, and others. Dr. Erica Ellingson is a professor of astrophysics at the University of Colorado, Boulder. Nick Schneider is a professor of planetary science at the University of Colorado, Boulder.