The dense Serpent Nebula surrounds the ancient Citadel and is one of the station’s most effective defenses. The thick gas and dust from the nebula make it impossible for enemy ships to launch an organised attack, or locate the Citadel without co-ordinates. Commander Shepard can get a good view of the Serpent Nebula from the Upper Wards.
The composition and origin of the Serpent Nebula is the subject of debate. Some believe the nebula was actually created by the Citadel itself, over millennia of ejecting particles and debris from self-repair into space.
The nebula is home to dozens of mass relays. A number of races‘ home clusters are directly connected to the Citadel in just one jump: the Annos Basin (salarians), the Apien Crest (turians), the Athena Nebula (asari), the Krogan DMZ (krogan), and the Silean Nebula (elcor).
Solar Systems Directory:
- Boltzmann: Wheeler• Bekenstein• Asteroid belt• Thooft• Veltman• Feynman
- Widow: Citadel• Aria’s Fleet‡• Fuel depot†• Mass relay†‡
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