Amazing_Goob
Suddenly, near a random planet, in a random system, space begins to bend and stretch as another plane of the universe begins to come into view. A large moon can be observed, with a heavy debris field composed of metal rich asteroids and such. Behind the moon is visible a small red star and the rest of the system, which in it's foremost area appears to be rather empty.
After a few seconds the anomaly ceases, and the only thing that is left are two, weird, angular and assymetrical ships, each 200 meters long. They don't seem to possess any visible weapons, however it might be wise to remain cautious about an un-expected visit.