Twins Sidney and Stella love doing everything together. Everything except share. When a quarrel over a bouncy ball spells cosmic disaster, the twins must face their biggest-ever challenge: working together to find a new moon!

• ISBN: 9780763666231
• Author: Yarlett, Emma
• Published: 2013
• Themes: Brother and sister, sharing, Siblings, Twins
• Descriptors: Fiction, Picture Book, Primary (ages 6-9), United States