The GLIESE 581 system was the very first location for extrasolar colonization by humans. In the 21st century, it was observed to have three planets orbiting it, the largest being present day Anlexodus. Later on it was discovered to only have one other planet orbiting it, Halada. The first colony established in the system was on the already habitable Minerva, which required minimal terraforming to establish.
|Anlexodus||Warm Gas Giant|