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Humanity rebuilds itself

Humanity arises as a major spacefaring civilization over 150,000 years before the present day, but is largely destroyed after war with an equally powerful enemy who is similar to them in many ways. Humanity are exiled to Earth where, after the apocalypse, they begin anew, re-building technology and culture slowly over millenia.

Humanity arises as a major spacefaring civilization over 150,000 years before the present day, but is largely destroyed after war with an equally powerful enemy who is similar to them in many ways. Humanity are exiled to Earth where, after the apocalypse, they begin anew, re-building technology and culture slowly over millenia.

Cyclical time

In the season 1 episode "Flesh and Bone", Leoben explains that humanity is destined to replay the same events over and over, though their specific role may not necessarily be the same.


When the humans first encountered the San 'Shyuum, they went to war with the technologically-advanced race, who based their technology on that of a long-dead civilization. They soon formed an alliance, trading military defence for technological gain. While they were powerful allies, this didn't mean that they supported each other. Their empire would collapse in a war with another space-faring civilization, worsened by the effects of a parasitic organism.

Over the 150,000 year period after the firing of the array, the Milky Way's races slowly returned to their might.

When the Sangheili first encountered the San 'Shyuum, they went to war with the technologically-advanced race, who based their technology on that of a long-dead civilization. They soon formed an alliance, trading military defence for technological gain. While they were powerful allies, this didn't mean that they supported each other. Their empire would collapse in a war with another space-faring civilization, worsened by the effects of a parasitic organism.

The homeworld lost to the stars

BSG and Primordium both involve necessary information about the human homeworld being lost in a dark-age some time after leaving it to colonise other worlds. In BSG's case, it was the location of Kobol, itself. In Primordium's, it is Erde-Tyrene's status as the human homeworld.