Mass Effect 2

The second game of the original Mass Effect trilogy has 23 clusters that can be accessed from the Galaxy Map.
These contain 78 star systems, which in turn contain 274 planets.
== Clusters ==
* Caleston Rift
* Crescent Nebula
* Eagle Nebula
* Far Rim
* Hades Nexus
* Hawking Eta
* Hourglass Nebula
* Ismar Frontier
* Krogan DMZ
* Local Cluster
* Minos Wasteland
* Nubian Expanse
* Omega Nebula
* Pylos Nebula
* Rosetta Nebula
* Serpent Nebula
* Shadow Sea
* Sigurd's Cradle
* The Phoenix Massing
* The Shrike Abyssal
* Titan Nebula
* Vallhallan Threshold
* Viper Nebula
== Systems ==
* Alpha Draconis
* Amada
* Amun
* Aquila
* Aralakh
* Arinlarkan
* Arrae
* Aysur
* Bahak
* Balor
* Batalla
* Boltzmann
* Caestus
* Century
* Chandrasekhar
* Chomos
* Dakka
* Decoris
* Dholen
* Dirada
* Dranek
* Elysta
* Enoch
* Faia
* Faryar
* Fathar
* Fortis
* Haskins
* Hekate
* Hoplos
* Iera
* Imir
* Kairavamori
* Kalabsha
* Kriseroi
* Kyzil
* Lenal
* Lusarn
* Ma-at
* Malgus
* Micah
* Mil
* Nariph
* Nith
* Ondeste
* Osun
* Pamyat
* Paz
* Phi Clio
* Ploitari
* Psi Tophet
* Qertassi
* Raheel-Leyya
* Relic
* Sahrabarik
* Salahiel
* Satent
* Schwarzschild
* Sheol
* Skepsis
* Sol
* Solveig
* Sowilo
* Strabo
* Talava
* Tasale
* Tassrah
* Thal
* The Sea of Storms
* Thorne
* Typhon
* Urla Rast
* Verr
* Widow
* Xe Cha
* Yakawa
* Zaherin
* Zelene
== Planets ==
* 2175 Aeia
* 2175 AR2
* 2181 Arion
* 2181 Despoina
* 2181 Eubolos
* Acaeria 
* Aegis
* Aequitas
* Aganju 
* Agnin
* Aigela 
* Aitarus
* Aite
* Akraia
* Alchera
* Alformus
* Alingon
* Alkonost
* Allusah
* Altakiril
* Ammut
* Anedia
* Anhur
* Anjea
* Ansuz
* Antictra
* Antigar
* Antinax
* Aphras 
* Aratoht
* Asteria
* Atahil
* Azrahas
* Bannik
* Bast
* Bastzuda
* Beach Thunder
* Bekenstein
* Beregale 
* Beyalt
* Bindur
* Boro
* Bothros 
* Bovis Tor
* Bres
* Canalus
* Canctra
* Capek
* Chalkhos
* Charoum
* Choitadix
* Clogon 
* Corang
* Crick
* Cyllene 
* Daratar
* Darwin
* Dobrovolski 
* Dor
* Dorgal
* Doriae 
* Doz Atab
* Dumah
* Durak
* Echidna
* Ehstag
* Eingana
* Ekuna
* Elatha
* Elohi
* Epho
* Erinle
* Erros
* Etamis
* Euntanta 
* Farlas
* Feynman
* First Land
* Fitful Current
* Flett
* Gaelon
* Gamayun
* Garan
* Garvug
* Gei Hinnom
* Gellix
* Geus 
* Goliath
* Gotha
* Gregas
* Haestrom
* Hagalaz
* Hebat
* Helyme
* Hesano
* Heshtok
* Hito
* Horizon
* Illium
* Imaen
* Imorkan
* Invictus
* Isa
* Isale
* Ishassara
* Island Wind
* Israfil
* Joab
* Jontan 
* Jonus 
* Jupiter
* Kakabel
* Kanin 
* Karora
* Karumto
* Kaushus
* Keimowitz
* Kelim
* Kenaz
* Ker
* Kobayashi
* Komarov
* Korar
* Korlus
* Kruban 
* Laban 
* Laconix
* Laena
* Lattesh
* Lepini
* Lihrat
* Linossa
* Lisir
* Logasiri 
* Lorek
* Mahavid
* Maisuth
* Maitrum
* Mantun
* Mars
* Maskawa
* Melile
* Mercury
* Metaponto
* Mizraim 
* Moros
* Murky Water
* Mylasi
* Namakli
* Nambu
* Naskral
* Nataisa
* Naxell 
* Nearog
* Neidus 
* Neith
* Nephros
* Neptune
* Nepyma
* Nirrus
* Norehsa
* Nutus
* Odasst
* Olokun 
* Orunmila
* Osalri
* Pahhur
* Parasc
* Parnassus
* Partholon
* Patsayev
* Pauling
* Pietas
* Pluto
* Pollino
* Ponolus
* Ponos
* Pragia
* Preying Mouth
* Prospect
* Quarem
* Quodis
* Raisaris
* Rescel
* Rihali
* Rotesk
* Rothla
* Rough Tide
* Ruam 
* Rustaka
* Sakata
* Saleas
* Sanctum
* Sarait
* Sarapai
* Saturn
* Sazgoth
* Sehtor
* Sekhmet
* Selvos
* Serao
* Shasu
* Shir
* Siano
* Sineus
* Sobek
* Synalus 
* Taitus
* Takkan
* Talaria
* Talis Fia
* Tamahera
* Tamgauta
* Tarith
* Tefnut
* Temerarus
* Tenoth
* Terapso
* Teshub
* Teukria
* Thail 
* Tharopto
* Thegan
* Thenusi 
* Theonax 
* Thooft
* Thrivaldi
* Thunawanuro
* Thurisaz 
* Tosal Nym
* Trident
* Trigestis
* Triginta Petra
* Triodia
* Tuchanka
* Tula
* Tunfigel
* Uranus
* Urdak
* Urmola 
* Uruz 
* Utha
* Uwan Oche
* Uzin (Kriseroi)
* Uzin (Malgus)
* Vard
* Vatar
* Vaul
* Vecchio
* Veltman
* Vem Osca
* Venture
* Venus
* Viantel
* Vioresa
* Vir
* Volkov
* Volturno
* Wallace
* Watchman
* Wenrum
* Wheeler
* Wrill
* Xerceo
* Xetic
* Yamm
* Yunaca
* Zada Ban
* Zanethu
* Zeona
* Zesmeni 
* Zeth
* Zirnitra 
* Zorya