Project Hail Mary

In a flashback, Ryland and Stratt travel to Geneva for a critical meeting. While waiting in yet another conference room, they are joined by Dr. Lokken, a Norwegian scientist who immediately confronts Ryland over his past research. She dismisses his paper on alternative biochemistry as “childish” and accuses him of misleading the scientific community. Ryland fires back, arguing that Astrophage mitochondria’s similarity to Earth’s mitochondria proves that they did not evolve independently. The argument escalates until Stratt forcefully ends their bickering, shifting the discussion to why Lokken has insisted on meeting. In response, Lokken claims that the Hail Mary has a fundamental design flaw that could jeopardize the mission.

Lokken points out that most of the necessary scientific equipment won’t function properly in zero gravity. Stratt insists that engineers worldwide are developing zero-g-compatible versions, but Lokken argues that such complex instruments took decades of refinement and cannot be reliably converted in time. Instead, she proposes an alternative: artificial gravity through a centrifuge. Ryland immediately understands her meaning, explaining that the ship could be split between the crew compartment and the fuel tanks, connected by long cables to simulate Earth-like gravity through centrifugal force. This approach would allow them to use off-the-shelf scientific equipment without the risks of untested adaptations.

After some deliberation, Stratt concedes that the centrifuge is the best option. Lokken prepares to leave, intending to submit the proposal to a committee. But Stratt cuts her off, informing her that she is now part of Hail Mary’s design team. Lokken protests, claiming she never volunteered, but Stratt makes it clear she doesn’t have a choice. Ryland, accustomed to Stratt’s authoritative style, reassures Lokken that resistance is futile.

Back in the present, Ryland’s realizes the Hail Mary is a centrifuge. He finds the relevant control panel and confirms the ship’s ability to separate and rotate. Despite some hesitation about whether all components are secured, he engages the centrifuge sequence. The ship’s interior tilts and shifts as it splits, with the crew compartment rotating to face the opposite direction. Ryland experiences increasing gravity, as the ship stabilizes at 104 meters of separation. Checking the telescope, he notices the alien ship, Blip-A, mimicking his actions, spinning in sync with Hail Mary—perhaps as an attempt at further communication.

With the centrifuge engaged, Ryland retrieves the alien cylinder, now cool enough to handle. Testing its properties, he discovers it is made of an impossible material—solid xenon, a noble gas that should not form solids. Inside, he finds a model of the Petrova line and a star map centered on Tau Ceti, with one star connected by a filament: 40 Eridani. Suspecting that this means the aliens have also suffered from Astrophage, Ryland modifies the model by adding Earth’s sun with its own Petrova line and sends it back to Blip-A. After two hours, the aliens respond with another cylinder. Inside is a new model—one that depicts the Hail Mary and Blip-A connected by a tunnel. Ryland quickly deduces that the aliens are asking to meet with him.