Triplanetary is a foundational work of space opera, but its place in the Lensman series is unique and often a point of confusion for new readers. Originally published as a standalone novel in 1934, it was later heavily revised and expanded in 1948 to serve as the first book of the six-volume Lensman series.
The book is essentially a prologue on a cosmic scale, divided into two distinct parts: a sprawling, episodic history of the secret war between the forces of Civilization (Arisia) and Barbarism (Eddore), and a more focused, modern narrative that sets the immediate stage for the events of the core Lensman series.
Triplanetary is a fascinating but somewhat uneven entry in the Lensman series. It functions less as a tight, character-driven novel and more as a sweeping historical prologue. For a reader new to Smith, starting with Galactic Patrol might provide a more immediate and thrilling introduction to the core Lensman concept. However, for those who want the full, epic backstory and the “big picture” of the cosmic war, Triplanetary provides the essential foundation upon which the entire glorious edifice of the Lensman universe is built. It is the “once upon a time…” for one of science fiction’s most influential sagas.
