Colonial Age
From Tardis Wiki, the free Doctor Who reference
The Colonial Age was the name of a period of human history that began in 2100. It was named as such because it was by this year that humans began to successfully set up colonies on planets outside their native solar system. One of the first planets to be colonised was Agora.
The Sixth Doctor and Grant Markham observed its beginning in orbit over Mars. (PROSE: Killing Ground)
