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Black holes are neither holes nor black. They're invisible and packed with matter! Future astronomers will find out many more fascinating facts about these space phenomena with this intriguing book. Carefully crafted text encapsulates the most important information about black holes, such as how scientists locate them and their significance in a star's life cycle. Amazing photographs support critical concepts and inspire a true appreciation of the spectacles of space.

Learn about the rich history of Mission San Buenaventura: how it started, the people who ran it, the indigenous population, and its legacy today.

Decades after the end of the communist regime in Hungary, the author of this book receives a call about the appearance in a file of some documents that may interest him. They contain a surprising secret that will shake him to the ground.

Learn how people collect data for weather predictions, the U.S. government census, emergency rescues, and more! This Spanish-translated title teaches readers about data collection, approximation, and estimation through practical examples.