"Vera Rubin was one of the astronomers who discovered and named dark matter, the thing that keeps the universe hanging together. Throughout her career she was never taken seriously as a scientist because she was one of the only female astronomers at that time, but she didn't let that stop her. She made groundbreaking and ... significant discoveries that scientists have only recently been able to really appreciate--and she changed the way that we look at the universe"--

Sandra Nickel is a former NYC lawyer who now lives with her family in Switzerland. She is a graduate of the Vermont College of Fine Arts with an MFA in writing for children and young adults. Her books include Big Bear and Little Fish, Breaking Through the Clouds, and Nacho's Nachos.

Aimée Sicuro is an illustrator, picture book maker, and surface pattern designer who received a BFA in Illustration from Columbus College of Art and Design. She lives in Brooklyn with her husband and young sons.