Cosmic Debris

by Jonathan Powell

Published 25 April 2017
This book examines the mysterious and the well-studied debris in Earth's crowded neighborhood. From orbiting comets to the workings of the Asteroid Belt, and from meteor showers to our home-grown network of orbiting satellites, the full diversity of space objects and the debris they create is explored. Powell also discusses some of the current research techniques used to find potentially harmful rogue elements, with an emphasis on keeping watch for any objects that may intersect Earth's orbit. Such bodies also impact other worlds, and much has been learned from observing these encounters.
The information in this book is intended to foster thought about the universe in which we live, but without overloading its readers with numbers and lecture-room analysis. Like a good thriller, it allows its readers to pace themselves with the story and, by the end, encourages them to draw their own conclusions.

From Cave Art to Hubble

by Jonathan Powell

Published 3 December 2019
Since ancient times, humans have been engaged in a continual quest to find meaning in and make sense of sights and events in the night sky. Cultures spread around the world recorded their earliest efforts in artwork made directly on the natural landscapes around them, and from there they developed more and more sophisticated techniques for observing and documenting astronomy.

This book brings readers on an astronomical journey through the ages, offering a history of how our species has recorded and interpreted the night sky over time. From cave art to parchment scribe to modern X-ray mapping of the sky, it chronicles the ever-quickening development of tools that informed and at times entirely toppled our understanding of the natural world.
Our documentation and recording techniques formed the bedrock for increasingly complex forays into astronomy and celestial mechanics, which are addressed within these chapters. Additionally, the book explores how nature itself has recorded the skies in its own way, which can be unraveled through ongoing geological and archaeological studies.
This tale of human discovery and ingenuity over the ages will appeal to anybody interested in the field of astronomy and its rich cultural history.