The Nine Numbers of the Cosmos

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OUP Oxford, Mar 15, 2001 - Science - 188 pages
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How old is the universe? How far away are the galaxies and how fast are they travelling away from us? What is dark matter and why do astronomers think it pervades the universe? How heavy is the vacuum? How do galaxies form? Michael Rowan-Robinson answers these and many more questions in a highly original and intriguing way. He encapsulates our current knowledge (both what we do and don't know) of the origin and the nature of the universe into nine numbers. These cosmic numbers appear to be independent characteristics of our universe and include its age, the Hubble constant (a measure of its rate of expression), and the density of matter in the universe. Only one of the nine numbers is known with real precision, and four of them only poorly known. The complex ideas that underpin modern cosmology such as the origin of the elements and quantum theory are explained clearly and accessibly, and more speculative ideas like inflation and superstrings are also covered, but with a refreshing scepticism. While most of what we know has been learnt during the 20th century, Rowan-Robinson provides a historical perspective, paying homage to the achievements of the Greeks, Renaissance astronomers, and the age of Newton. He ends the book with a look to the future, predicting that with the further space missions we will accurately know the nine numbers described in this book by the year 2015, but concludes that the origin of the Big Bang itself will still be a mystery by the end of the twenty-first century, and perhaps even in the year 3000.
 

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Any author who points out that "... the answers given by religious and pseudo-scientific texts invariably turn out to be wrong. Creationism and astrology are nonsense. The Book of Genesis offers no ... Read full review

The nine numbers of the cosmos

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The science of cosmology asks the big questions: How old and how large is the universe? How did it start? How did stars and galaxies come into being? What will the future bring? As such, it is a ... Read full review

Contents

1 We exist
1
2 We are not in a special place
23
3 An expanding universe
39
4 A universe of finite age
59
5 The Hot Big Bang
71
6 Cold dark matter
87
7 The missing ingredienttilt strings or hot dark matter
103
8 How heavy is the vacuum?
117
9 How do galaxies form?
129
10 The nine numbers of the cosmos
149
Further reading
161
Glossary
163
Name Index
169
Subject Index
171
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About the author (2001)

Michael Rowan-Robinson is Professor of Astrophysics, and Head of the Astrophysics Group, at Imperial College, London. He is an internationally recognized expert on observational cosmology and his book, The Cosmological Distance Scale is generally regarded as a classic. He leads several major international collaborations in infrared and submillimetre astronomy, including a European Commission Training and Mobility Network. He has served on numerous advisory bodies for ground-based and space astronomy both in the UK and abroad. He received a NASA Public Service award for his work on the IRAS mission.

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