Skip to main content

A Brief History of Black Holes - Becky Smethurst ***

Black holes are a perennially interesting topic, so anyone writing a book about them needs to provide a new angle - a USP, if you like. For this mostly interesting book, Becky Smethurst has gone for 'why everything you know about them is wrong.' This reflects the several common misconceptions about black holes, even though some of these have been so thoroughly debunked already that it's hard to believe there are too many left who hold them.

We start with an introduction to the nature of stars, bring in gravitational wells and neutron stars and get on to black holes themselves - though we soon discover they are not black, one of those misapprehensions alongside the idea that they are super gravitational vacuum cleaners, inevitably destroying everything nearby. We're told that black holes don't suck, which is sort of true as we explore the warping of space and time - though the distinction between gravitational attraction and sucking is perhaps fairly trivial if you get too close to a black hole.

Overall, then, what we get here is a fairly high level, approachable introduction to the nature of black holes, where they come from, the role of the supermassive variety in galaxies and more.

Smethurst is a little hazy on some aspects of history - for example, she says that it wasn't until the 1920s that some nebulae were considered to be galaxies, even though Herschel, amongst others, had suggested this significantly earlier. Also, and how many times do we have to say this, she repeats the myth that Giordano Bruno was the first to suggest the the stars were suns in their own right - he appears to have got the idea from Nicholas of Cusa.

It is also worrying that Smethurst seems to put those who 'challenge the existence of dark matter' on a par with flat earthers - 'It came about after over three decades worth of observations and research pointed to no other plausible conclusion' - this simply isn't true. The reality is that dark matter particles have never been detected, while modified gravity theories arguably explain more than dark matter does. Both theories have flaws, but at the moment, it's all too common for popular astronomy/astrophysics books like this to give a casual dismissal of anything but those elusive particles. That simply isn't good science.

As is also common with cosmology/astrophysics books in particular (for some reason), there is a degree of perkiness to the presentation that becomes a little wearing. Take, for instance, this opener to a chapter: 'The recipe for making a black hole is theoretically very simple, yet in practice rather difficult. Essentially, throw enough matter into a small enough space, crush it down and voila! A black hole will result.' So far, tolerable. But then Smethurst changes gear and gives us: 'Now I can't speak for everyone, but my puny noodle arms definitely aren't strong enough to crush matter down in this way, and I imagine neither are yours. I'm sure even veterans of the recipe game like Mary Berry would struggle to follow that one.' It's the kids' TV presenter's approach to science writing, which doesn't sit well with an adult audience. 

This is a perfectly likeable book, but in a crowded marketplace, it struggles a little to stand out.

Hardback:   
Kindle:  
Using these links earns us commission at no cost to you
Review by Brian Clegg - See all of Brian's online articles or subscribe to a weekly digest for free here

Labels

Labels:

Comments

Post a Comment

Popular posts from this blog

The Decline and Fall of the Human Empire - Henry Gee ****

In his last book, Henry Gee impressed with his A (Very) Short History of Life on Earth - this time he zooms in on one very specific aspect of life on Earth - humans - and gives us not just a history, but a prediction of the future - our extinction. The book starts with an entertaining prologue, to an extent bemoaning our obsession with dinosaurs, a story that leads, inexorably towards extinction. This is a fate, Gee points out, that will occur for every species, including our own. We then cover three potential stages of the rise and fall of humanity (the book's title is purposely modelled on Gibbon) - Rise, Fall and Escape. Gee's speciality is palaeontology and in the first section he takes us back to explore as much as we can know from the extremely patchy fossil record of the origins of the human family, the genus Homo and the eventual dominance of Homo sapiens , pushing out any remaining members of other closely related species. As we move onto the Fall section, Gee gives ...
Post a Comment
Read more

Pagans (SF) - James Alistair Henry *****

There's a fascinating sub-genre of science fiction known as alternate history. The idea is that at some point in the past, history diverged from reality, resulting in a different present. Perhaps the most acclaimed of these books is Kingsley Amis's The Alteration , set in a modern England where there had not been a reformation - but James Alistair Henry arguably does even better by giving us a present where Britain is a third world country, still divided between Celts in the west and Saxons in the East. Neither the Normans nor Christianity have any significant impact. In itself this is a clever idea, but what makes it absolutely excellent is mixing in a police procedural murder mystery, where the investigation is being undertaken by a Celtic DI, Drustan, who has to work in London alongside Aedith, a Saxon reeve of equivalent rank, who also happens to be daughter of the Earl of Mercia. While you could argue about a few historical aspects, it's effectively done and has a plot...
Post a Comment
Read more

Amazing Worlds of Science Fiction and Science Fact: Keith Cooper ****

There's something appealing (for a reader like me) about a book that brings together science fiction and science fact. I had assumed that the 'Amazing Worlds' part of the title suggested a general overview of the interaction between the two, but Keith Cooper is being literal. This is an examination of exoplanets (planets that orbit a different star to the Sun) as pictured in science fiction and in our best current science, bearing in mind this is a field that is still in the early phases of development. It becomes obvious early on that Cooper, who is a science journalist in his day job, knows his stuff on the fiction side as well as the current science. Of course he brings in the well-known TV and movie tropes (we get a huge amount on Star Trek ), not to mention the likes of Dune, but his coverage of written science fiction goes into much wider picture. He also has consulted some well-known contemporary SF writers such as Alastair Reynolds and Paul McAuley, not just scient...
Post a Comment
Read more