Beginning of a new science fiction short story.
The automated distress call from New Jerusalem Colony went out over the tanglecom, so it was received instantaneously two hundred and thirty-seven light years away on Earth. Since a least-time hyperspace journey from Earth would take over three years, the message was forwarded to Mir Colony, which was the closest to New Jerusalem. Forty-three days later the starship Katiusha arrived in orbit around New Jerusalem.
Since the signal had contained no details beyond the code indicating catastrophic failure of the colony AI, the crew of the Katiusha were not sure what to expect. Repeated attempts to raise anyone on the ground via radio were met with nothing but static.
A robotic surveillance probe was sent down to the central city of the colony. The buildings appeared to be intact, but there were no people to be found. A few groundcars that had crashed were the only signs of violence, but there were no bodies.
There had been three hundred thousand colonists on New Jerusalem. Now there were none.