Changes

*'''The Ring''' — A belt of defensive platforms that form a continuous ring around the planet. Made from rock excavated from Luna itself, it is bristling with countless [[Lance]], [[Torpedo]], and [[Macrocannon]] batteries.{{Fn|2a}} During the [[Horus Heresy]], the Ring was significantly damaged, and since then has not been completely repaired, more resembling an arc than a full ring.{{Fn|10a}}

*'''Herodotus Omega Dome''' - Held an vault holding the ancient [[Selenar]] artifact known as the [[Magna Mater]]. During the [[Siege of Terra]] traitor forces attempted to breach the Dome and acquire the artifact, causing [[Ta'lab Vita-37]] to recruit the crew of the ''[[Sisypheum]]'' for aid. During the battle, the Dome was destroyed.{{Fn|11}}

==Environment==

**{{Endn|10c}}: Chapter 11

*{{Endn|11}}: [[Sons of Selenar (Novella)]] Chapters 8-11

===Uncited===