Anomaly
From Futurama Wiki
An Anomaly is a rip in the fabric of space. This was caused by Bender when he brought all of his time duplicates into the room at the same time instead of their proper times. Each Bender exploded causing the anomaly to rip open. Beyond this anomaly is a Parallel Universe where Yivo resides. It is surrounded by an electromagnetic field that do not allow robots or machines through and will blast them away. After a few months, Yivo closed up the anomaly.
