This is the story of radio astronomy, of how radio waves are generated by stars, supernova, quasars, colliding galaxies, and by the very beginnings of the universe itself. This revised book provides an update on the state of radio astronomy and those sections no longer regarded as cutting edge have been removed. With this book, aimed at a lay audience, you learn what astronomers are doing with those huge dishes. With each of these observatories, the scientists collect and analyze their data, "listening" to the radio signals from space, in order to learn what is out there, and perhaps even if someone else may be listening as well.

From the discovery of entirely new kinds of galaxies to a window into cosmic ‘prehistory’, Bothwell shows us the Universe as we’ve never seen it before – literally. Since the dawn of our species, people all over the world have gazed in awe at the night sky. But for all the beauty and wonder of the stars, when we look with just our eyes we are seeing and appreciating only a tiny fraction of the Universe. What does the cosmos have in store for us beyond the phenomena we can see, from black holes to supernovas? How different does the invisible Universe look from the home we thought we knew? Dr Matt Bothwell takes us on a journey through the full spectrum of light and beyond, revealing what we have learned about the mysteries of the Universe. This book is a guide to the ninety-nine per cent of cosmic reality we can’t see – the Universe that is hidden, right in front of our eyes. It is also the endpoint of a scientific detective story thousands of years in the telling. It is a tour through our Invisible Universe.

This book describes some of the frontier problems of cosmology: our almost total ignorance of what the Universe is made up of, the mystery of its origin and its end. The book starts with a description of the historical events that led to the construction of the Big Bang model together with the stages that transformed the Universe from a very hot place to a very cold one, full with the structures that we observe today. These structures (stars, galaxies, etc.) constitute only 5% of the contents of the Universe. Concerning the remaining 95%, dubbed dark matter and dark energy, we know very little, and we have only indirect evidence of their existence. The text describes the story and the protagonists who showed the need for the existence of this 'missing matter', the observations, and puzzles they had to solve to understand that dark matter was not ordinary matter. The book describes the hunt for dark matter, carried out with instruments operating in space, on the Earth's surface, and in laboratories built in the bowels of the Earth. It also describes dark energy, which manifests itself in the accelerated expansion of the Universe, and appeared only a few billions of years ago. The book discusses why dark energy must exist and what its existence implies, especially for the future and the end of our Universe.

Nasser offers a guide for Christians who want to learn to hear and see God in their everyday lives, focusing on hyow to listen and where to look.

Please note: This is a companion version & not the original book. Sample Book Insights: #1 Light is the tool through which we understand our cosmos. Everything we know about our place in the Universe is based on light. Light is a wonder that we are so familiar with in our everyday lives that we can easily overlook how strange it really is. #2 The idea that light is produced by sources and then enters our eyes is a modern one, and was not accepted by many philosophers throughout history. The ancient Greek philosopher Democritus believed that all matter is made of tiny ‘atoms’ that are constantly expelling ghostly images called ‘eidola’ that fly through the air until they enter our eyes. #3 The Scientific Revolution, which took place hundreds of years later, was made possible by the advances in science made by the Arab astronomer Hasan Ibn al-Haytham. His ideas about light, which were new and revolutionary, allowed us to see the Universe in a new way. #4 The speed of light was measured first by astronomy, where distances of millions of kilometres are common. The first good estimate of the speed of light came from Galileo, who saw the moons of Jupiter orbiting around their parent planet.