Departure: 2159
Travel time: approximately 51 years
Arrival: 2210
Lumen Rising departed during the final frantic years before the predicted disruption of the Solar System.
Her low sustained acceleration and strict vibration limits meant she could not match the fastest Exodus ships.
Initially, nobody considered this remarkable.
Fifty years was terrible.
It was also survivable.
For the first two decades, Lumen remained culturally recognizable as the scientific expedition that had left Earth. Its observatories were continuously used. Crews watched the Solar System recede behind them and Epsilon slowly brighten ahead.
Listening became part of daily life.
Every child aboard learned basic signal recognition.
Every technician spent time separating artificial transmissions from stellar noise.
Families would sometimes gather in observation spaces to listen to old human transmissions arriving from behind them.
Then the signals from Sol became fewer.
Then weaker.
Then increasingly historical.
Eventually there was almost nothing.
The Darkening
In 2186, a coolant failure damaged one of Lumen's auxiliary reactor systems and destroyed several power-distribution trunks.
Nobody feared immediate extinction, but the ship suddenly had far less electrical reserve.
Nonessential lighting was shut down.
Large portions of the habitat remained dim for almost four years.
External transmission was restricted.
Entertainment systems were rationed.
The observatories, however, remained active.
They consumed relatively little power while listening passively.
During those years, sitting in darkened compartments and listening to the universe became one of the few activities available to everyone aboard.
People began calling the observation periods Lantern Watches.
Children grew up falling asleep beneath dim emergency lights while their parents listened for signals that almost never came.
The name Mothlight first appeared as a joke.
Someone described the watchers gathered around one functioning display as “moths around the last lamp.”
The name persisted.
The First Pattern
In 2190, Lumen's forward arrays detected a sequence of extremely weak narrowband events originating roughly along the ship's direction of travel.
The signals were never conclusively identified.
They appeared nineteen times over fourteen months.
The intervals were irregular.
No meaningful information could be extracted.
Several scientists argued they were instrument artifacts.
Others suspected an unknown stellar phenomenon.
A small group noted that the signals appeared more frequently after Lumen performed navigational burns.
The resulting argument lasted years.
Nothing was proven.
But for the first time, people aboard began asking whether something ahead had noticed them.
The Gleam Event
The event that transformed Lumen occurred in 2195.
During routine optical observations, several independent instruments recorded a small object crossing the ship's projected trajectory.
It was distant.
Tiny.
Possibly reflective.
What made the observation controversial was its apparent change in velocity.
The object seemed to alter course.
Then it disappeared.
There was no engine plume.
No detectable transmission.
No explanation.
For eleven minutes, hundreds of people aboard watched tracking displays while Lumen's computers attempted unsuccessfully to classify the object.
Nothing approached the ship.
Nothing attacked.
Nothing communicated.
But the object appeared to have maneuvered.
The crew called it the Gleam.
Officially, Lumen's scientific council classified the event as unresolved.
Culturally, the damage was already done.
The Communion began there.
Not as a religion, but as gatherings.
People compared recordings.
They examined earlier anomalies.
They began conducting coordinated observations after engine burns.
They debated whether humanity had been detected.
Over the following fifteen years, the gatherings developed their own vocabulary, traditions, songs, symbols, and philosophy.
By the time Lumen Rising reached Epsilon in 2210, almost everyone aboard knew what a Mothlight Watch was.
Then they entered a star system where a few other humans had already begun reporting unidentified spacecraft.
For many aboard Lumen, that was confirmation.
For the scientists who had spent decades telling everyone to remain cautious, it was a nightmare.