Tellus was the first extrasolar colony established by humanity.
In the late 21st century, the United States of America along with several nations constructed the colony ship SS Roebuck, which was to launch to Tellus and establish the first extrasolar colony. When the ship arrived, the colonists dismantled it and established the first settlement.
Over time, the settlement of New Boston was built and became the capital of the colony. Soon, at least two more cities were established and Tellus became a prosperous world.