You’re twelve years old, sitting in your backyard at night with your two best friends. You are looking up at the sky, and without warning, preamble, or explanation, the stars flare as one and then abruptly disappear. A mere facsimile of the sun – a perfect yellow disk unmarred by solar flares or sunspots – rises in the morning, but the stars are gone for good. This is what Tyler Dupree and his friends, the brilliant twins Diane and Jason, encounter. These three friends grow up under ‘the Spin,’ as it is soon called – a barrier around the earth placed there by some unknowable alien intelligence, for a purpose they can only guess. Even more perplexing: time is passing much, much faster outside the barrier than inside it. A satellite sent up to explore the phenomenon breaks through and then comes crashing down immediately, but instead of the pristine machine launched hours earlier, what crash lands on earth is a banged up satellite with weeks, months, of data recorded. A moment on earth is measured in millennia outside the Spin, which is dire news: at that rate, humanity will live long enough to be destroyed by our own decaying sun, which hasn’t slowed its life cycle down at all. The timeline? About 40 years on earth until the sun expands far enough to fry us where we stand.

How would you choose to spend those 40 years?

Jason dedicates his life to pure science, learning more about the Spin than any other earthling. Diane finds refuge in one of the many new religions that spring up in the wake of the slow disaster. Tyler plows ahead with life as usual, becoming a doctor and as “average” as any citizen can be under the Spin.

Spin falls on the hard side of the science fiction spectrum, which means there is lots of real science in addition to speculation in the plot. It also means that even the invented aspects of Wilson’s universe are imbued with a plausible explanation based on real science; for example, the scary global epidemic he invents, CVWS, is fake, but its symptoms (similar to tuberculosis) are familiar and its behavior – a disease crossing over to humans from cattle – is all too real. Because of this it’s a better pick for established fans of speculative fiction; if you like the genre already, the sophisticated plotting, satisfying conclusion, and smart characters will delight you. If you just have a casual interest, you might have a bad time trying to wade through all the science on display here.