Jeffrey Sinclair, Commander of Babylon 5:

"It was the dawn of the third age of mankind – ten years after the Earth-Minbari War.

The Babylon Project was a dream, given form. Its goal: to prevent another war, by creating a place where humans and aliens can work out their differences peacefully. It's a port of call – home away from home – for diplomats, hustlers, entrepreneurs, and wanderers.

Humans and aliens, wrapped in two million, five hundred thousand tons of spinning metal . . . all alone in the night.

It can be a dangerous place, but it's our last best hope for peace.

This is the story of the last of the Babylon stations. The year is 2258."

The year is 2267 and mankind is spreading across the Milky Way. 

The area within the green lines represents the known galaxy.