Prerequisite: Acquisition of Jacob: The Gift of Greatness (Mass Effect 2)
- Mission: Jacob: The Gift of Greatness
- Assignment: N7: Archeological Dig Site
- Originally, Rosetta Nebula had four systems. The missing one, called Iota Urania, can be found in game files of Mass Effect 2 and Mass Effect 3. This system had five planets, respectively called Walden, Erewhon, Mizora, Pala and Cascadia.
- After completion of N7: Archeological Dig Site, a news report can be heard on the Citadel regarding the events that took place during the assignment. In it, the Rosetta Nebula is referred to as "Aeia Cluster".
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