UNC: Geth Incursions

Travel to the Armstrong nebula and you will receive a transmission from Admiral Hackett detailing four geth outposts that need to be destroyed.

The four outposts are in the Hong, Tereshkova, Vamshi and Gagarin systems on the planets Antibaar, Rayingri, Casbin and Maji. When all four outposts are destroyed, you will receive an update addressing a concern in the Grissom system, where the geth have a main base of operations on Solcrum, the small moon beside Notanban.