Headcanon/AU — What if Project Hail Mary was the beginning of an era?
With the Project Hail Mary movie starting to gain attention here in my country, I found myself thinking about something: this story is far too big to end simply with “Grace saved Earth, Rocky saved Erid, the end.”
Because if humanity truly discovered that it was not alone in the universe, and if first contact was not with a civilization similar to us, but with the Eridians — a species of high pressure, high temperature, complex sound-based communication and biology completely incompatible with ours — then everything would change.
Not only science.
It would change politics, medicine, diplomacy, religion, technology, education, family, and even the way humans understand what it means to be a person.
So this AU was born from that question:
What if Project Hail Mary continued? What if Grace and Rocky were not the end of the story, but the beginning of an interstellar civilization?
My idea is not to treat the Hail Mary mission as an isolated event. Before anything else, I wanted to imagine a logical continuation: decades after the events of the original story, humans and Eridians remain connected by the consequences of that first contact.
They develop comparative medicine, compatible habitats, interspecies translation, life support for biologically incompatible organisms, new forms of communication, new attempts at travel, and a kind of diplomacy that simply did not exist before.
But none of that happens quickly.
That is an important part of this AU: time does not pass the same way for everyone.
Grace does not disappear, save Earth, and return the next day to receive medals. The distances between stars are still enormous. Relativity still matters. Messages take time. Travel takes time. Earth goes through years and decades of uncertainty, reconstruction, and political dispute while Grace experiences a different rhythm of time among the Eridians.
To humanity, Grace becomes almost a historical figure before he can become a concrete presence again.
To the Eridians, he is the human who lived among them, taught, learned, aged differently, and helped build the first real bridge between two intelligent species.
This difference between lived time, Earth chronological time, and interstellar time becomes one of the foundations of the AU. Contact between worlds is not instant, clean, or easy. It is full of delays, losses, myths, political versions of history, and people trying to control the meaning of what happened.
In this continuity, Grace does not become merely a historical footnote or a retired scientist.
He becomes one of the central figures of the first human-Eridian interstellar era.
Humanity, after the Astrophage crisis, also does not remain the same. It survives, advances, and has to face the consequences of discovering that there are other intelligent peoples among the stars.
But the humans in this AU do not automatically become a perfect civilization.
They survived.
And surviving is not the same thing as becoming a utopia.
The Astrophage crisis forces Earth to advance greatly in energy, biology, medicine, closed agriculture, artificial intelligence, emergency systems, and space technology. But humans remain human: brilliant, competitive, generous, afraid, political, and dangerously good at turning a scientific discovery into a struggle for power.
Grace understands this.
He knows that contact with Erid cannot become the property of Earth, of a government, or of an institution. Rocky is not a resource. Erid is not a colony. The Eridians are not tools.
So one of the foundations of this AU is precisely the attempt to turn first contact into cooperation, not domination.
Because, to me, the most beautiful thing about Project Hail Mary is not only saving the Sun.
It is the fact that Grace and Rocky prove that two completely different species can recognize each other as people.
And if that happened once, then the universe can never become small again.
That is why the AU does not stop with humans and Eridians alone.
Over time, other civilizations eventually enter this network. Some through peaceful contact, others through tension, conflict, necessity, or gradual discovery. The impossible friendship between Grace and Rocky opens the way to something much larger: an interstellar community that is still imperfect, full of trauma, disputes, treaties, and risks — but real.
My idea includes humans, Eridians, and other civilizations that appear later, each one expanding a different consequence of that first encounter.
Because one thing is discovering that intelligent life exists beyond Earth.
Another thing is accepting that perhaps no species has the right to be the center of the universe.
I like this idea because it turns Project Hail Mary into the origin of an era, not just a mission.
Grace and Rocky remain the emotional heart of everything.
But the consequences of their friendship spread outward.
Their friendship changes science.
It changes diplomacy.
It changes medicine.
It changes the idea of family.
It changes the most basic question of all:
What makes someone a person?
Because after Rocky, a person does not need to have a human face.
They do not need to breathe oxygen.
They do not need to live at a comfortable temperature.
They do not need to speak with words.
They do not need to have a body shaped like ours.
They need to be recognized.
And maybe that is the most important legacy of Grace and Rocky.
They did not only save stars.
They taught the universe how to become larger.
So, this is the foundation of my AU: a logical continuation of Project Hail Mary, where the first contact between Grace and Rocky does not end the story, but begins an era of interstellar cooperation between humans, Eridians, and other civilizations.
What do you think? Do you think this continuation fits the spirit of the original story?
