Cover design by Owen Corrigan
Cover photographs: courtesy of the author (astronaut and moon); © Portalarium (game background)
Space helmet image © mhatzapa/Shutterstock, Inc. Light bulb image © Dooder/Shutterstock, Inc. Sheet of binary codes © iunewind/Shutterstock, Inc. Close-up of Milky Way © MaIII Themd/Shutterstock, Inc. Astronaut in space © fStop Images GmbH/Shutterstock, Inc. Unless otherwise noted, all photographs are courtesy of the author.