Prerequisite: Priority: Palaven (Mass Effect 3)
Note: After completing Priority: The Citadel II, the Petra Nebula becomes inaccessible.
The Petra Nebula is a cluster in Earth Systems Alliance Space. During the Reaper invasion, the only location there available to the Normandy SR-2 is the Vetus system.
Locations[]
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Missions[]
- Mission: Grissom Academy: Emergency Evacuation
- Mission: Citadel: Biotic Amp Interfaces
Trivia[]
- The cluster appears to have been named after the archaeological city in what is now Jordan. Many locations in this cluster, with the notable exception of Elysium, also appear to have been named after places from this region.