The Runaway World

Orcus a rogue planet, a runaway world, finally being captured by the Sun's gravitational field, but only after doing terrible damage to a future Earth. Even before this catastrophic event, the human race had been split into different factions - the Ants and Antelopes. The Ants who had become specialised in mechanical aptitude, and the Antelope who specialised in the aesthetic. The antelopes flee en masse to Orcus, to build a civilisation there, whilst the Ants remain on Earth.