Mars:
"Hey can't you feel it, the whole planet's singing the blues...the Red Planet Blues...." Red Planet Blues, D-ROK.
Home to the Adeptus Mechanicus and the Cult of the Machine, also the location of the Segmentum Fortress for the Segmentum Solar.
(more to follow).
Source: White Dwarf: Issue 139 by various, White Dwarf: Issue 140 by various
Submitter: Simguinus
Hive World Terra