Hubble, Humason and the Big Bang - Ron Voller ***

Edwin Hubble is a controversial figure in the history of astronomy, and it has become fashionable to downplay his contribution to our understanding of the universe, particularly of his understanding of the significance of the redshift of galaxies in suggesting an expanding universe. In this detailed analysis of Hubble's work alongside observer Milton Humason, Ron Voller does an excellent job of giving appropriate weight to the pair's findings, while not glossing over Hubble's aggressive defence of his position and love of publicity that did not endear him to his peers.

The book is a very helpful source for someone attempting to dig into Hubble and Humason's work in some depth. Without every becoming too technical, it takes the reader through the detail of their discoveries and fits them into the timescale of the period. What it's less successful at, however, is what the author seems to be trying to make it, which is being an account that will be enjoyed by a general readership.

Voller has taken to heart the importance of context to popular science - but goes over the top with it to such an extent that backgrounditis can overwhelm useful content. There is, for example, a 64 page chapter covering 'two centuries of astronomical discovery' that simply gives far too much detail, including not only the astronomical developments of the period but most of the steps forward in basic physics too. There is then a whole chapter simply providing a fictional account of the first meeting of Hubble and Humason. While careful use of fictional depiction can be useful in TV, it has to be handled incredibly well in written non-fiction to avoid appearing cheesy, and here it feels distinctly uncomfortable - it's hard to see what the reader gains from it. Of course the two must have had a first meeting, but we know nothing about it, and it doesn't contribute to understanding their work to have something made up.

We then jump back in time (there is far too much jumping around in time) to get lengthy descriptions of both Hubble and Humason's family background. A couple of lines would be fine, but I really don't care too much about their families, I want to know about their input to the Big Bang theory - which we don't get onto until around page 289.

My other slight concern is that Voller misses some easily checked facts (particularly about the UK). For example, he puts Slough '60 miles west of London' (it isn't) and misses the whole point of Herschel ending up there because it was near Windsor. He calls William of Ockham 'Bavarian', which the inhabitants of Ockham (in Surrey) would be surprised to learn, and he calls Oxford's colleges 'schools', where Oxford's schools are its departments not its colleges, e.g. the school of medicine. I am hoping that the astronomical history parts - obviously far more significant to the value of the book - are more accurate.

Despite the issues, anyone investigating Hubble or the development of the understanding of the expanding universe would find this book both interesting and useful.

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Review by Brian Clegg