Por Que No Se Cae La Luna?

Omtale

Why is the Earth round? How much does it weigh? How was the universe formed? Who invented the internet? Is it possible to build a time machine? What are black holes? Why does a slice of bread always fall butter-side down? This book answers all these questions, and many more! Why Doesn't the Moon Fall? is educational, easy to understand, and illustrated with lots of humor.