Static

Probes left in the Beta universe record the final moments of reality, as a formless static wall absorbs first …-Beta and then …-Beta. The feed is abruptly cut off shortly before the rift winks out of existence. The negative mass particles it was producing are likewise gone. Anyone left on that side is no more.

The command below will trigger the "Static" event in Stellaris:

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

• That could've been us