Worthy Universe 10

The Nebula Universe is the editorial name for the universe in which Nebula takes place.

Humans
In the Gregorian Calendar year 2480, humankind had the sudden need to colonise the other planets in their solar system, as Earth was becoming too overcrowded. They spread across the Sol System, and slowly terraformed some of the planets and moons to accommodate their physical needs.

This distracted them for many centuries, and so it wasn't until the year 4016 that they completed faster-than-light travel, and began to explore more of the universe. After 100 years of exploration and meeting other sentient species (gaining universal translator technology in the process), the human race began to colonise across the galaxy.

Almost 400 years later they began to colonise in the Kutar Nebula

Kutar Nebula
A vast, mostly purple nebula that encompasses 3 solar systems

Dri System
Misra: The home planet of the T'Roi, a peaceful race, who are believed to be the first sentient species to evolve in the Kutar Nebula. The planet has many different biomes, like most habitable planets, with the biomes better suited for life being mostly taken over by cities.

Karontus: Misra's moon. It is barren, with a single domed city on its dark side, where Kutar Patrol have no jurisdiction, and so has become a hub for criminals with access to space travel.

Viros: The third planet from the Dri Star, which had no forms of life whatsoever. It was terraformed by the T'Roi, and became a colony world. Over the millennia, many forms of flora and fauna have been introduced

Pharon: The home planet of the Pharos and the Kriar, who together have influenced species across the universe (including the Ancient Egyptians of Earth). Pharon is around 85% ocean, with one single continent, which mostly consists of forests and fields, with some tundra regions.

Masa System
Tir: The home planet of the Makteen, a race with one of the most cruel militaries in the known universe. Innocent citizens are constantly killed as shows of strength to keep other citizens in line. Because of this, the Makteen are hated by most sentient species, and Tir is very rarely visited by outsiders, with more people leaving than arriving.

Meos: The home planet of the Meon, an incredibly advanced species that rival the T'Roi. Most of Meos is covered in advanced cities and controlled conservation areas.

Trivia

 * The T'Roi were the first race to develop sufficient interstellar travel and bring unity between the sentient species of various planets. As such, they established their solar calendar as the 'official' calendar, so that all the sentient species had a better sense of time in relation to other species.
 * Nebula is set in the year 4628AD by the Gregorian Calendar, which is the equivalent of the year 16,320 DK (Dev Katruan/Post-colonisation).