Project Hail Mary

Ryland panics as he realizes he’s in another solar system, struggling to process the implications. His breathing spirals out of control until he forces himself to focus on the ship’s control panels. One labeled “Astrophage” catches his attention, displaying a massive fuel reserve and a steady consumption rate. A schematic of the Hail Mary, the name of the ship, provides his first full understanding of its layout. The ship consists of a cylindrical front section where he currently is, followed by a lab and dormitory beneath him. Notably, the ship’s hull is lined with fuel pipes, all kept at an exact temperature: 96.415°C. Though he doesn’t yet understand the significance, the precision of that number sticks with him.

In a flashback, Ryland recalls working in the lab, where he first discovered the mysterious properties of the sun-dimming microorganism now called Astrophage. It maintains a constant internal temperature of 96.415°C, no matter its environment. Stratt had kept him isolated, refusing to let other scientists study it until she was sure it wasn’t dangerous, effectively using him as a test subject. She insisted that its study had to remain under strict control to prevent a global disaster. This memory suddenly clicks with his current situation—Astrophage is the ship’s fuel, and its temperature regulation is essential for storing and using it.

In the present, Ryland searches the dormitory and finds a hidden access panel beneath one of the bunks. Inside, he discovers soft-sided storage containers, one of which holds crew uniforms. As he sorts through them, memories surface. The name on the uniforms, “Yáo” and “Ilyukhina” stir deep emotions, and he decides they deserve a proper burial. Dressing their skeletal remains in their uniforms, he carries them one by one to the airlock, ejecting them into space with a solemn farewell. For the first time, the weight of Ryland’s complete isolation sinks in, and he feels truly alone.

Another flashback takes Ryland back to his classroom, where his students eagerly question him about the news surrounding the dimming sun. Ryland explains that Astrophage absorbs the sun’s energy and could lower Earth’s temperature by 10 to 15 degrees, triggering catastrophic consequences for ecosystems and food supplies. The students, too young to grasp the true horror of the situation, quickly lose interest. But Ryland, realizing the future they will inherit, feels overwhelmed. He rushes to the lab, demanding to continue his work, only to find that Stratt is already dividing the Astrophage samples among top scientific institutions. After an argument, she agrees to let him keep just three cells for further study.

Back in the present, Ryland examines the ship’s systems for more answers. He finds a panel labeled “Beetles” and discovers schematics for four small probe-like crafts named John, Paul, George, and Ringo. Each contains a propulsion system, a radio, and five terabytes of storage, but no scientific instruments. After a moment, Ryland realizes they are meant to return information to Earth. Checking the fuel reserves, he calculates that at the current rate, he only has forty days before it runs out. Quickly, the truth becomes unavoidable—the Hail Mary was never meant to return home. Ryland’s mission is to make a discovery and send the results back, but he will not survive the journey.