Book Log: A Brief History of Black Holes
May. 19th, 2026 09:40 pmMaybe I shouldn't have picked up this one, but I did anyway because I do like reading about space and more books means getting different arguments/points of view. I did learn new things by reading Dr. Becky Smethurst's A Brief History of Black Holes: And Why Nearly Everything You Know About Them is Wrong, but a great deal of the book is a friendlier/more accessible version of the book I'd read by Marcia Bartusiak, in explaining how and what we've figured out about black holes so far.
For most of the book the retread was fun like visiting old friends, especially because Smethurst has a light touch which also explains why she's a presence on youtube, but other times I'd be impatient for her to get to something significant, or itch for a more detailed explanation. She shares her astrophysicist thoughts in modern, pop culture-friendly way, which tonally can be hit or miss, but I did laugh at points, and I think I will better remember her explanation of how a supermassive black hole in the center of a galaxy is quite stable actually. Black holes aren't vacuums any more than the sun is -- it's only when you get really close that you get sucked in, and even then very slowly, so that whole subplot about that potential planet that orbits a black hole in Interstellar is not an awful idea off the bat. Smethurst also has a personal preference against the word "hole" as it implies a void, where she argues that a dark star would be better mentally visualized as a mountain, i.e. a massive thing that blocks our view of anything inside it.
Also new to me is the hypothesis that our solar system's mysterious Planet 9 could be a small black hole. Not that it is, but it could be, as it fulfills certain requirements for the weirdness of the orbits of the outer planets, plus the fact of the difficulty of spotting Planet 9.
For most of the book the retread was fun like visiting old friends, especially because Smethurst has a light touch which also explains why she's a presence on youtube, but other times I'd be impatient for her to get to something significant, or itch for a more detailed explanation. She shares her astrophysicist thoughts in modern, pop culture-friendly way, which tonally can be hit or miss, but I did laugh at points, and I think I will better remember her explanation of how a supermassive black hole in the center of a galaxy is quite stable actually. Black holes aren't vacuums any more than the sun is -- it's only when you get really close that you get sucked in, and even then very slowly, so that whole subplot about that potential planet that orbits a black hole in Interstellar is not an awful idea off the bat. Smethurst also has a personal preference against the word "hole" as it implies a void, where she argues that a dark star would be better mentally visualized as a mountain, i.e. a massive thing that blocks our view of anything inside it.
Also new to me is the hypothesis that our solar system's mysterious Planet 9 could be a small black hole. Not that it is, but it could be, as it fulfills certain requirements for the weirdness of the orbits of the outer planets, plus the fact of the difficulty of spotting Planet 9.