An Entertaining and Somewhat Demanding Survey
This isn't a textbook; it's like a really well illustrated anthology of extracts from a lot of "Scientific American" or Astronomy" magazine articles. Each topic is treated briefly, with one predominant theme, a few interesting sidebars, and a wealth of illustrations, most of which are helpful and all of which are interesting.
As with science magazines generally, the difficulty level varies considerably. Some articles are interesting and perfectly understandable - say, the article on brown dwarf stars. Some sections are generally comprehensible, but don't lead one to a firm and deep understanding - say, the article on using the inverse square ratio, apparent brightness and pulsing Cepheids to calculate star distances. Some bits I can't say I ever really fully grasped - for example, the explanation of how galaxies positioned on an expanding space time bubble can appear to be travelling faster than the speed of light. Or the subtleties of supersymmetry.
That said, there isn't going to be an exam and I don't try to pass as a cosmologist at dinner parties, so the real question is whether the book is interesting or fun. The answer there, for me, was yes. I learned a lot of new stuff and firmed up some things I already sort of knew. The sidebar factoids and the historical throwaway bits were interesting. Further, because developments in this field move quickly and usually aren't widely reported, there were lots of new bits about areas I'd lost track of. (Example, it's hard to keep track of all the new discoveries that come out the Hubble operations.)
But of course there is a lot more here than just Big Bang cosmology. There are updates on the latest findings about the other planets in our solar system, an explanation of the demotion of poor Pluto, a discussion of the cutting edge of the search for exoplanets, a history of probes and explorers, the latest on colonizing Mars, a discussion of the effort to construct a unified field theory, an explanation of gravity lensing, an explanation of why glass is transparent, speculation on how a warp drive would work, and on and on.
The upshot is that if you like to keep in touch with current developments in the field and like to learn about and think about such science topics, this book offers a lot of rewards. That's especially the case here because this is a DK book, and as is the case with their destination guides a great deal of attention has been paid to pictures, illustrations, graphs and the like. The graphics run from "pretty" to very helpful and informative, and are nicely tied to the narrative. The topic lends itself to a visual presentation and DK has not skimped in that department.
So, a happy find for a science minded browser, and a commendable attempt to present science "to the rest of us", without any of that corny "Dummies" filler. (Please note that I received a free advance ecopy of this book in exchange for a candid review. Apart from that I have no connection at all to either the author or the publisher of this book. )