...I have waited impatiently for this book, waited filled with questions that have not been answered by the press coverage on the Harvard supernova team's work. So much of the story is not sound-bite-able, but requires some exposition. Closing the book, I feel like I've completed a 5 course Thanksgiving dinner. I feel great satisfaction. I still have lots of questions, but most of the remaining ones are for the theoretical physicists who are now working to explain what the Harvard team found. On behalf of the astronomers, Kirshner unhesitatingly gives up the family jewels in his book. This is a two-part book. Part one, chapters 1 - 7, is a well-crafted primer on astronomy and physics, with an overview of the cosmological mass density problem that addresses the geometry of space-time and the ultimate fate of the universe. The rest of the book covers the story of the Harvard high-z supernova research team and the remarkably creative and clever way they tried to solve the mass density problem. I became a little restless reading chapters 1 - 7. I have spent years reading about and pondering the information in this part of the book, and I believe that some readers of "The Extravagant Universe" may have, too. A lot of good books have been written on various aspects of modern astronomy and physics and on the personalities who pushed us along toward our current understanding of where the universe came from and how it works. Most of these books delve more deeply into smaller chunks of the big picture. By contrast, Kirshner goes hard and fast, presenting the material in such a way as to be entertaining and comprehensible to a reader who has never read a book on astronomy, physics or cosmology. It was probably a good idea to do this, as the overview is necessary if the average lay reader is to understand what the Harvard supernova team was doing, and why.I had nothing to worry about, though, because turning the page and starting Chapter 8... well, let me make a Kirshner-style analogy here. You know the rush you feel when a roller coaster engages the clanking lift chain and begins ascending the first giant hill? That's what you experience when Kirshner begins telling his unique story. From Chapter 8 on, there is no messing around. Kirshner goes into fine and careful detail describing the Harvard CfA team's work applying supernova measurements to a solution for Omega. In the process, he conveys a picture of the tedium and exhausting commitment required to accomplish anything useful in astronomy. "The Extravagant Universe" is a saga of hard work and hard thinking by a bunch of brilliant people. The story is fraught with as many difficulties and setbacks as Admiral Byrd faced in his winter alone in Antarctica, and it is filled with colorful and distinctive personalities, each of whose participation played a part in a true scientific triumph. Kirshner is generous in giving credit to his many associates, but his folksy and self-deprecating style can't hide his central role in guiding and fault-checking the procedures employed to examine high-z supernovae and in applying a fierce questioning logic to interpreting the results. When it became clear that the Harvard team's findings were going to raise eyebrows (to put it terribly,terribly mildly), he did a great job of conveying the predicament this put the team in - to what an extreme extent they had maneuvered themselves into a position to become either figures of historical importance in our understanding of the universe or, by one slip or lack of vigilance, becoming some of history's "village idiots" (a term Kirshner uses repeatedly and well.) The coverage of the competing supernova team at Berkeley is a bit less than fraternal and compassionate. This is a big part of the story. There was a real horse race going on between the two teams, and Kirshner's account gives you some rich things to ponder in this regard. I had long wondered about the dynamics between the Harvard and Berkeley teams - were they working together, working against one another, or something in between? The answer is, they were not sabotaging one another or devoting a lot of time to spying, but they were in definite competition and hoping to reach a solid conclusion in time to scoop their opponents. They were approaching the problems in very different ways. There was a high priority on the part of the Harvard team to out-do the Berkeley team when it came to rigorous thinking and cleverness. The Berkeley group had the technology to find and measure more supernovae faster, so it fell to Harvard to maximize the accuracy of their measurements so that a smaller sampling could yield superior statistical accuracy. They pulled this off and were able to get papers published first with more substantial claims and the facts to back them up. Kirshner's account makes the Berkeley team seem a little reckless and in a big hurry, and suggests that the Harvard team was ultimately able to out-think their opponents in a number of important ways. Reading about the competition between teams is a lesson in the virtues and benefits of squaring off in a potential winner/loser scenario. It brought out the best in a group of people who had a lot to offer in the first place. Without violating Amazon review policy by giving away the "punch line" of this book, I can assure you that Kirshner does indeed spill the beans on the inside workings of a research team engaged in an extraordinarily ambitious scientific quest. The narrative is richly human. The author's wit, curiosity and zeal for discovery is contagious."The Extravagant Universe" and the research that it describes deserve that most carefully rationed of all accolades given in the scientific world: "nice work!" The Extravagant Universe: Exploding Stars, Dark Energy, and the Accelerating Cosmos (Princeton Science Library)
In early 1998, scientist Robert Kirshner and his team published the astonishing claim that the universe's expansion was accelerating due to the power of dark energy. Subsequent research has not been able to disprove the results obtained by Kirshner's "high-z supernova search team." This book is Kirshner's discussion of that finding and its importance to cosmology.The first half of the book is essentially a crash course in the basics of cosmology, with many anecdotes and background from earlier research since Einstein or even before. Kirshner's witty style keeps this section entertaining even for those familiar with the information. He compares several distance indicators, such as Cepheid variables, redshifts, and supernovae. We learn how supernovae can be used to measure distances to remote galaxies due to their incredible brightness. We also become familiar with the pitfalls of using supernovae as standard candles, because there are a few different types.Then the author gets into the real purpose of his book: to describe his research team's methods, results, and road to success with the press. The subtitle of the book is somewhat misleading; it should have been something like "The Story of the High-Z Supernova Search Team". Though the information wasn't presented in quite the way I was expecting, Kirshner gets the job done. He patiently educates the layman reader in many aspects of astronomy and cosmology. Towards the end it becomes a race between two supernova search teams using different methods. Though I found this yarn interesting, I would have preferred a general discourse to the narrative presented here.Overall, this book is probably one of the most well-written and absorbing reads on this specific subject. Science and astronomy buffs should enjoy it greatly. - Dark Energy - Hard Science - Popular Science - Astrophysics'
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