Hala

Hala was a colony planet of the Asgard. During the Asgard-Replicator war, the Asgard used the android Reese to summon the Replicators to trap them in a time dilation field. SG-1 travelled there to ensure the device was activated properly. Later, the planet was shattered when Hala's sun was collapsed into itself by the Asgard.

Related
Replicators, black hole