ResoluteReader: Donovan Moore - What Stars Are Made Of: The Life of Cecilia Payne-Gaposchkin

It is difficult, when reviewing biographies, to separate the review of the biography from the subject. It is all too tempting just to rewrite a summary of the person being depicted and ignore the biography itself. This is particularly the case when the subject is such an extraordinary person who is almost unknown outside the field they excelled in. Such a person was Cecilia Payne-Gaposchkin. As such the main importance of Donovan Moore's biography is that it highlights the life and contribution of this amazing scientist. But first we have to talk about the importance of Moore's subject.

Born in 1900, Payne-Gaposchkin's life straddled the greater part of the twentieth century, and exemplified some of the great changes that were to take place. From a young age she was fascinated by the world around her - botany, astronomy and science in general. But she was also a gifted student of literature and language and later in life, she peppered her science lectures with allusions and references to plays, poetry and literature. Moore's book tells the story of Payne-Gaposchkin's early life and the important influence of her parents who clearly did not hold with Victorian ideas of what a young woman should study. He is particularly strong when highlighting the barriers that Payne-Gaposchkin faced as a result of her gender.

The most important part of the book deals with Payne-Gaposchkin's break into academia. She eventually went to Cambridge were, defying expectations and open hostility from faculty and bureaucrats, she studied botany, physics and astronomy. The first of these she dropped quickly, and focused on her greatest love - astronomy. Her interest in the subject was famously begun when aged eight years old she had seen a meteor while walking with her mother. But it was really after attending a Cambridge lecture by the great astronomer Arthur Eddington about his 1919 expedition to verify Einstein's relativity theories while viewing an eclipse, that she became hooked. She completed her studies but Cambridge would not award a degree to a woman until 1948, so Payne-Gaposchkin emigrated to the United States were she got a job at Harvard in what would become the fledgling astronomy department there.

Payne-Gaposchkin's Cambridge years are of great interest because they show the stifling nature of life at Cambridge. The heavy weight of tradition, sexism and Empire clung to the university. Payne-Gaposchkin's entrance exam to her science course was centred on a translation of a classical text from ancient Greek. Hardly a test of whether or not she understood the basics of her science subjects. But it is the appalling inequality experience by women that is most shocking to the modern reader. The rudeness, casual sexism and dismissive treatment of female students is one thing, but so is the way that they were treated by wider society. Women wanting to play tennis had to have written permission from home in order to go out without petticoats. Male students rioted against the idea that women would be awarded degrees.

Going to Harvard was Payne-Gaposchkin's way out. Getting a low paid job at the university was the result of a brilliant exam, but the university also got its money's worth. Harlow Shapley, the Director of the Harvard Observatory, ensured she was very lowly paid for decades, and Payne-Gaposchkin - for fear of losing the job - never complained publicly. But Harvard was very different to Cambridge, and this probably reflects the different places that the two countries were at. Britain was still clinging onto the remnants of its Empire, stuck in the old ways. The United States, at least, was a country powering forward economically. Its treatment of women was still unequal and misogynistic, but at least women could work at Harvard and no one seemed to care about petticoats too much. Payne-Gaposchkin ended up working on stellar spectra, work that relied on the labour of several female "computers" whose systematic work had provided the observatory with a wealth of raw data. From this Payne-Gaposchkin was able to publish a brilliant PHd thesis that overturned some key ideas of astronomy, including those of Arthur Eddington, her great hero. Payne-Gaposchkin showed how the most abundant elements in the stars, and hence the universe, where not in the same proportions as on Earth. Instead the element Hydrogen was dominant. It was too radical a conclusion and Payne-Gaposchkin had to tone down her argument at the behest of more famous (and male) scientists. But she was eventually proved right - though not accepted until male scientists had verified her conclusions.

At Harvard, Payne-Gaposchkin was a pathbreaking scientist. She also broke down many barriers for women. According to Moore, she was, "The first PHd in astronomy, the first winner of the Cannon Award, the first woman promoted to professor at Harvard... the first woman at Harvard to chair a department."

These firsts were made in the face of opposition and resistance. She was repeatedly ignored for promotion because of her gender, though she also forced the authorities to accept her unusual behaviour. She brought her children to work during World War Two, forcing the Observatory to permit other women to do the same at a time of great shortages of labour for childcare. She lectured while pregnant, something that was considered shocking in the 1930s and 1940s. She was defiant of convention and this defiance led her to take risks and do things, such as drive across the United States with a female friend camping, that must have been shocking to many at the time.

She also exhibited great bravery, travelling to Germany and Russia in the 1930s, helping the astronomer Sergei Gaposchkin escape Nazi Germany and get a job at Harvard. They eventually married and had several children. Cecilia gained the "reputation" of being a "dangerous radical" according to her own autobiography, for the radical discussion groups she and Sergei hosted during World War Two, but it seems that her radicalism never became the organised kind. This is perhaps something she understood herself, saying at a lecture once that she found herself, "cast in the unlikely role of a thin wedge". The words were intended as a joke - Payne-Gaposchkin was almost six feet tall and chain smoked - but they were also very true.

Payne-Gaposchkin was a "thin wedge" but this should not diminish her achievements. It was her fortitude and confidence that drove her forward, and opened up a path for many others to follow. But first and foremost she was a scientist - her love was pushing the boundaries of human knowledge.

Donovan Moore's book is a great introduction to Cecilia Payne-Gaposchkin's momentous and unusual life. It is not without its faults - I felt that Moore glossed over the science that Payne-Gaposchkin was working on a little too much. The reader deserved to know more about why her breakthroughs were so important and radical. This requires some more context - the quandary over the make up of the stars (and hence the universe) was because there was no real accepted understanding of how stars worked. This would require clarity over nuclear physics, which was simply not available to the scientists that preceded Payne-Gaposchkin. In this very real sense Payne-Gaposchkin was working on cusp of enormous breakthroughs and her pioneering work helped take this knowledge forward. Sadly Moore doesn't really do this justice. I would also have liked more information on her later years - there is little here about the 1970s and her life then. I would also have valued a slightly more critical engagement with the life and work of Arthur Eddington, whose attitude to critics was problematic and, in the case of Subrahmanyan Chandrasekhar (who also fled Britain to the US) was likely shaped by racism.

Nonetheless this is a fascinating, entertaining and well written account of the neglected life of one of history's greatest scientists.