In this fourth book of the classic chapter book series by award-winning author Sharon M. Draper, four boys who call themselves the Black Dinosaurs go to space camp Ziggy and his friends can't wait for space camp, where they'll get to learn about weightlessness and how astronauts eat--and use the bathroom--in space But Ziggy has another goal: he wants to meet some aliens. Purple, three-headed Martians, preferably, just like in his Mega...