The narrator, a writer sent to chronicle the first manned trip to Mars, opens his diary with a confession: his agent told him to fake the story if nothing happens. Instead, he vows to be honest. This tension between manufactured drama and actual experience runs through the entire account. The diary format gives the story a raw, immediate quality, with entries dated from October 1, 1960, to June 28, 1961. The crew includes a pilot, co-pilot, navigator, and an elderly biochemist named Dwight Kroger, chosen for his expertise over his ability to survive the journey. The narrator's voice is self-deprecating and observant, noting details like the navigator's ballpoint pen and the co-pilot's scarlet face.

The Human Angle and Its Discontents

The narrator's agent, Louie, frames the mission as a chance for the public to identify with the writer, but the narrator immediately doubts this. He worries he will be locked up, unaware of fights or accidents. Louie's advice—"So you fake it"—sets up a conflict between the expected human-interest story and the messy reality. The diary becomes a record of that conflict. The narrator's honesty is tested repeatedly: when the pilot, Pat, orders the radio smashed to avoid transmitting news early, the narrator records it without comment. The crew's decisions, like jettisoning Kroger (voted down), are presented matter-of-factly. The human angle, it turns out, includes pettiness, fear, and absurd compromises.

Sugar, Moss, and the Biology of Mars

The Martians are made of sugar, a fact discovered when the crew finds crystals in a zoo. This whimsical biology has serious consequences: the Martians consume the ship's charcoal and water, threatening the air-filtration system. Kroger, the biochemist, is thrilled by the reproductive process, but the crew faces a practical crisis. They try baking bread to create carbon for the AFAR system, but the Martians eat the bread. The narrator's tone remains dry: "Kroger says that at least—when the Martians get bigger—they'll have to show themselves." The contrast between scientific curiosity and survival instinct is stark. The Martians are never seen directly, only inferred from missing supplies and disappearing sugar crystals.

Diary as a Record of Deterioration

The diary entries grow shorter and more desperate as conditions worsen. On June 26, the air is foul and the narrator is thirsty. On June 27, the AFAR system is gone. The crew's attempts to solve problems are half-baked: dismantling riveted metal plates is impossible, and Kroger's bread idea fails. The narrator's physical state mirrors the ship's decline. He gets sick after a celebration feast of pork. The final entry ends abruptly, mid-sentence: "Jones came forward to tell us the loaves were cooling, and when he got bac..." The incomplete sentence leaves the reader suspended, mirroring the crew's uncertain fate. The diary form, initially a tool for intimacy, becomes a stark chronicle of entropy.

The diary's honesty is its most striking feature. The narrator does not embellish or moralize; he simply records what happens, including his own discomfort and the crew's flawed decisions. Readers should pay attention to the gaps—what is left unsaid, the abrupt endings, the moments when the narrator's voice wavers. The story resists easy interpretation, offering instead a fragmented, firsthand account of a mission that goes wrong in ways both absurd and terrifying.