Ever since Williamina “Mina” Fleming was little, she was curious, and her childhood fascination with light inspired her life’s work. Mina became an astronomer in a time when women were discouraged from even looking through telescopes. Yet Mina believed that the universe, with its billions of stars, was a riddle—and she wanted to solve it. Mina ultimately helped to create a map of the universe that paved the way for astronomers. Newbery Honor–winning author Kathryn Lasky shares her inspiring true story, illuminated by amazing art from Julianna Swaney, illustrator of #1 New York Times bestselling We Are the Gardeners by Joanna Gaines.