Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Real science presented in easy words and great illustrations

What happens to a star when it dies? A small child dons a spacesuit to find out. The gravity of the black hole stretches him out. Another child considers a thimbleful of black hole on a seesaw, outweighing a stack of elephants.This book is full of hard science. But it is presented in easy words that a child of 4-8 can understand. The bright illustrations are full of motion and lend understanding and excitement to the subject.