Pangea

Distant future. Research spaceship faces with unknown physical phenomenon in a faraway space.

The outcome is safe - the spaceship manages to overcome the anomaly without visible consequences. Though, on arriving to the Earth, the crew discovers it not the same way, as it should be.

It seems, the anomaly represented a point of contact of several parallel layers of reality, where the events were happening a little bit differently. When the spaceship went out of the anomaly, it appeared in another layer of reality, not in the same when it got into the anomaly.