Martin DuBois
Martin DuBois is the primary science specialist for the Hail Mary mission, a brilliant polymath whose death in an Astrophage accident at Baikonur forces the reluctant Ryland Grace to become the mission's science specialist. DuBois embodies the mission's impossible standards: he is the most qualified candidate, yet his meticulous pursuit of knowledge leads directly to the catastrophe that eliminates both him and his backup, reshaping the crew's composition and Grace's destiny.
Identity and Background
Martin DuBois is an American man with three doctorates—in physics, chemistry, and biology—making him the most broadly knowledgeable science candidate available for the Hail Mary mission. Eva Stratt selected him as the prime crew's science expert over Annie Shapiro, who was more specialized in DNA splicing, because the mission required someone who could handle an unpredictable range of scientific challenges. DuBois is also coma-resistant, possessing the rare genetic markers that allow him to survive the long, medically induced coma required for the interstellar journey. He is described as having a meticulous, formal personality: he keeps perfect posture, addresses everyone by their title, and maintains detailed, orderly notes. He and Annie Shapiro, his backup, begin a sexual relationship, which he discloses to Grace with clinical directness, stating that they are "enjoying very active sexual encounters" and that there is "no need for condoms." He insists on informing Grace because "there should be no secrets within the core mission group."
Life and Plot Trajectory
DuBois is introduced as part of the prime crew arriving at Stratt's Vat, the aircraft carrier serving as the project's headquarters. He shakes Stratt's hand and speaks so softly as to be almost inaudible, thanking her for the opportunity. He becomes Grace's student, learning everything Grace knows about Astrophage biology. During these training sessions, DuBois's formal demeanor contrasts with Shapiro's casual energy, but both are intensely focused on the science. DuBois also prepares for his own death on the suicide mission with characteristic thoroughness: he submits a detailed written request to die by nitrogen asphyxiation, specifying that he will use an EVA suit to pump in nitrogen, which will cause him to lose consciousness without the suffocation reflex. He includes a backup plan using the ship's airlock. He also volunteers to be the last to die, so he can use a gun to ensure his crewmates' deaths go smoothly if their methods fail.
Key Actions and Objectives
DuBois's primary objective is to serve as the Hail Mary's science specialist, using his broad expertise to analyze whatever they find at Tau Ceti. His most consequential action, however, occurs before the mission: he decides to test an extremely rare failure case in an Astrophage-powered generator. He requisitions one nanogram of Astrophage from the research center's quartermaster, but due to a mistake, he is given one milligram—a million times the intended amount. Because the containers are identical and the quantities are so small, neither DuBois nor Shapiro has any way to detect the error. When he activates the test, the entire building is vaporized, killing DuBois, Shapiro, and fourteen other staff members. The investigation reveals that the accident was caused by humanity's inexperience with managing Astrophage: the difference between a nanogram and a milligram is simply not perceptible to humans.
Relationships and Conflict
DuBois's relationship with Grace is one of student and teacher, but also of mutual respect. DuBois is the one who informs Grace that he has the coma-resistance genes, a fact Stratt had withheld. He also tells Grace that he and Shapiro have begun a sexual relationship, and that they are both aware it "can only end in death." His relationship with Stratt is purely professional; he is one of the many experts she has assembled. His relationship with his crewmates, Commander Yáo and Engineer Ilyukhina, is formal but cooperative. The most significant conflict surrounding DuBois is not interpersonal but systemic: his death exposes the fragility of the mission's personnel plan and the terrible cost of humanity's inexperience with Astrophage.
Change and Ending
DuBois does not undergo a character arc; he dies before the mission begins. His death, however, is a pivotal event that changes the course of the entire project. With both the primary and backup science specialists dead, Stratt is forced to conscript Grace, who has the coma-resistance genes and has been trained as a tertiary specialist. Grace is dragged kicking and screaming onto the mission, and his memory of being forced is erased by a French amnesia drug. DuBois's meticulous notes and digital diary are what allow the investigation to determine the cause of the explosion. His legacy is the knowledge that humanity's procedures for handling Astrophage were dangerously inadequate, and his absence is the direct cause of Grace's presence on the Hail Mary.
Narrative Role and Evaluation
DuBois functions as a narrative device that demonstrates the stakes of the Astrophage crisis and the ruthlessness of Stratt's decision-making. He is a flat character in Forster's sense: he is defined by his brilliance, his formality, and his tragic death. His death is not a moment of dramatic sacrifice but a senseless accident caused by a simple administrative error, underscoring the theme that humanity is fumbling with powers it does not fully understand. His presence also serves to highlight Grace's inadequacy: DuBois was the ideal candidate, and Grace is a terrified schoolteacher who had to be forced onto the ship. The narrative does not mourn DuBois at length; instead, it uses his death to propel Grace into the role of reluctant hero, a role he never wanted and for which he feels profoundly unprepared.
