A Black Hole Debacle — Keri Claiborne Boyle

Jordie is awed by asteroids, perplexed by planets, and mesmerized by moons. She can't believe her luck when she finds a black hole taking up residence in her desk at school. Of course she's keeping it. But when the black hole starts snarfing everything in sight—including Neptune the dog—she realizes that black holes need wide open spaces, galaxies to graze, and stars to slurp. So she sets things right. Just not before she embarking on a wild, time- and space-bending mission to save her pup.