When the Moon Hits the Sky
By John Scalzi
- When the Moon Hits the Sky
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Author: John Scalzi
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Publisher: Tor
- ISBN: 9781509835287
- Published: March 2025
- Pages: 336
- Format reviewed: Paperback
- Review date: 02/11/2026
- Language: English
One of the magical things about Science Fiction is that you do not always have to explain why something has happened. Some Space Opera epics will go into great detail describing how the ships work, or how space travel is made possible, but some of the best genre fiction just does not tell you. These books are not about the science, but how the science effects people. In John Scalzi’s When the Moon Hits the Sky, the moon one day suddenly turns into cheese. We may never know why, but we can measure the impact on the people left on Earth.
On the first day the moon just seemed to be a little larger and a little brighter. Was it the ozone magnifying it? Within the offices of NASA and other government agencies conversations have begun about what has happened. It appears that the moon has suddenly increased in size, but not mass. The new material appears to be organic in nature, almost cheese like. Whilst some worry about how this will impact the world’s gravitational field, others are thinking about who the first person will be to walk on cheese, or what will it tastes like.
Scalzi is a well-practised and successful genre writer at this point and has been known to be playful with the genre, especially in recent years with books about Starter Villains and Kajui. Moon continues this trend and is the most experimental yet as it follows a cheese moons phases for one lunar month. Rather than sticking with one character it moves around mostly America, peeking in at people from the very highest office to a local roadside diner. It has that feel of a World War Z, almost an oral history of the moon event through the eyes of the everyman.
Jumping from one person to another does mean that the book lacks some cohesion. You may have a chapter with a politician or scientist that explores the nature of the moon, only for the next chapter to focus on some older men in a café, or new lovers in a cheese shop. The book is at its best when we return to characters adjacent to ones we have visited before, allowing more of their story to be told. The traditional elements of what makes a story.
Scalzi should be praised even though the book is disjointed. The individual chapters are amusing but also pose the type of questions that science fiction is so good at. This is a book that explores the impact of an event, not the event itself. If the Moon really changed suddenly, that would have a fundamental shake up in our beliefs. Does it prove the existence of God, or renounce it? Does it prove there is magic? Will people accept the proof or consider it a hoax? These are the types of questions that are not always focussed upon in genre fiction as so much time is spent trying to understand the science.
Moon is an enjoyable book, lacks a little direction in places, but that reflects the type of chaos that the people in the book find themselves. Some question their very existence, others question when the coffee will run out. There is time enough in the book for Scalzi to pick and poke away at the nature of genre fiction, but also satire politics and wealth. It is a pleasure to read a novel by an accomplished writer who has the opportunity to play with the genre, fans of both Scalzi and fans of explorative Science Fiction will enjoy the book.
Written on 2nd November 2026 by Sam Tyler .
Topics and themes
Tone & Pace
Themes
Setting
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