A team of middle schoolers prepares for blastoff in this adventure from the author of the <i>New York Times </i>bestselling <i>Mousetronaut</i>, based on the childhoods of real-life astronauts Mark Kelly and his twin brother Scott.<BR><BR>It’s a long, hot summer and Scott and Mark are in big trouble for taking apart (aka destroying) their dad’s calculator. As a punishment, they’re sent to their grandfather’s house, where there’s no TV and they have to do chores. And Grandpa is less tolerant of the twins’ constant bickering. “Why don’t you two work together on something constructive. What if you built a go-kart or something?” Grandpa sugge
