Still another child explores the night sky with a fabulous companion—here, a white winged horse who helps her draw the moon across heavens populated by constellations, shown as they might have appeared in old engravings pricked out with shining stars. In carefully composed airbrushed paintings, this first-time illustrator appealingly combines the astronomy lesson with a sense of adventure and awe, nicely extending Osborne's gracefully phrased text. (Picture book. 4-8)