Books  Physical Sciences  Cosmology & Astronomy 

Revealing the Heart of the Galaxy: The Milky Way and its Black Hole

  • Traces the discoveries leading to our understanding of the scale and structure of the Milky Way Galaxy and our position within it
  • Explains the overwhelming evidence for the existence of a massive black hole at the Galactic Center, four million times more massive than the Sun
  • Provides a summary of the historical development of the black hole model for active galactic nuclei, which is useful for students (and specialists) as a reference
  • Discusses the mechanism of progress in astronomy – how discoveries are made and paradigms are born – and the social aspects of modern science

By: Robert H Sanders(Author)

204 pages, 79 b/w illustrations

Cambridge University Press

Hardback | Jan 2014 | #213725 | ISBN-13: 9781107039186
Availability: Usually dispatched within 6 days Details
NHBS Price: £29.99 $39/€33 approx

About this book

Written in an informal and engaging style, Revealing the Heart of the Galaxy traces the discoveries that led to our understanding of the size and structure of the Milky Way, and the conclusive evidence for a massive black hole at its center. Robert H. Sanders, an astronomer who witnessed many of these developments, describes how we parted the veil of interstellar dust to probe the strange phenomena within. We now know that the most luminous objects in the Universe – quasars and radio galaxies – are powered by massive black holes at their hearts. But how did black holes emerge from being a mathematical peculiarity, a theoretical consequence of Einstein's theory of gravity, to become part of the modern paradigm that explains active galactic nuclei and galaxy evolution in normal galaxies such as the Milky Way? This story, aimed at non-specialist readers and students and historians of astronomy, will both inform and entertain.

"In his captivating book Sanders gives an authoritative and entertaining, easy-to-read account of this 'detective story', from the beginnings in the last century to the most recent developments. As he tells his story, [he] conveys to the reader the fascination of research, the often unexpected discoveries, but also the meandering path of the research towards better understanding and knowledge, including the 'human' side of some of the major players in the story. I highly recommend this book to readers who want to understand and get captivated by one of the highlight discoveries of modern astronomy."
- Reinhard Genzel, Max Planck Institute for Extraterrestrial Physics

"This book gives a personal enthusiastic and well informed view of the exciting discoveries in astronomy since 1950. Major advances in astronomy are led by technology, but the theme of this engagingly written book is the development of ideas, and how they are tested and refined as new observations become possible. Sanders' central subject is the revelation of the structure of our Milky Way galaxy with its 'rather small' four million solar mass central black hole. However the reader will gain also insight into how astronomy and science develop via world-wide cooperation and debate. It is fun to read!"
- Donald Lynden-Bell, University of Cambridge


1. Introduction: the luminous pathway
2. The discovery of the Milky Way Galaxy
3. The new physics
4. Parting the veil with radio astronomy
5. The violent Universe
6. New windows on the Galactic Center
7. The Milky Way as a barred spiral galaxy
8. The evolving view of active galactic nuclei
9. The 'paradox of youth': young stars in the Galactic Center
10. Stellar orbits in the Galactic Center, QED
11. Black holes here, black holes there..
12. Traces of activity: past, present, future

Afterword: progress in astronomy

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Robert H. Sanders is Professor Emeritus at the Kapteyn Astronomical Institute of the University of Groningen, the Netherlands. Author of The Dark Matter Problem: A Historical Perspective (Cambridge University Press, 2010), Sanders has spent his career studying the orbit structure in barred galaxies, active galactic nuclei, and the problem of the mass discrepancy in galaxies. He received his PhD in astrophysics from Princeton University.

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