Unstable Spacetime

While studying the Astral Rift in …, we have inadvertently destabilized the dimensional anomaly. This is causing violent distortions in space and time, bending nearby reality in an unpredictable manner. A new sentient species has materialized on …, distributed evenly across our existing population. The … have no memory of where they are from and do not appear hostile. Wherever they originated, it is unlikely we can help them return.

The command below will trigger the "Unstable Spacetime" event in Stellaris:

When this event fires, you can choose between the following option:

• Fascinating.