I couldn’t help but wish that other missing parts had been included in the adaptation: a scene that uses a billiard table as a metaphor for a particle accelerator; Liu’s deeper exploration of the VR game, which allows the reader to try to untangle its collection of mysteries along with the characters instead of just watching them solve it; more details about the ingenious “human computer” in VR, which looks cool but isn’t really explained on-screen.

The scenario the show ultimately posits bears little resemblance to traditional sci-fi fare; the aliens are coming, but not for another four hundred years, putting humanity on notice for an encounter—and possibly a war—that’s many lifetimes away. This time span is as much a curse as a blessing. Forget the science for a second; what kind of political will—totalitarian or otherwise—is required to keep centuries of preparation on track? How do we get the über-rich to contribute to a new space race in a way that also flatters their egos? And what resources does it take to accelerate scientific discovery to a breakneck pace?