The solar system has eight planets (as, since 2006, Pluto is no longer considered to be a planet) and many moons. In the late 22nd century, much of the solar system was settled and various terraforming projects existed on many of the planets and moons. Departing from the Sun, one can find:
Mercury was settled in the 22nd century. The train city Terminator was constructed, set on tracks so that it would always be on the terminator (the predawn shadow) between the cold of the night and the burning light of the Sun.
The ambitious terraforming of Venus began in the 22nd century. The temperature was being brought down at 5 K a year; the CO2 would condensate; the Big Rain would follow and dry ice would form; water would have to brought from elsewhere, perhaps from the Saturnian moon Enceladus. The terraformers lived on asteroids on its orbit.
Or Earth. It has one moon, Luna. Birthplace of the human race. Main article.
Settled in the 21st century. Main article.
Used for mining and prisons.
In the late 22nd century, the Jovian League conducted more or less advanced terraforming projects on 18 of Jupter's moons. Huge space mirrors and gas lanters burning in Jupiter's atmosphere reflected by dishes provided light. The four Galilean moons, Callisto, Ganymede, Europa and Io, had ambitious terraforming projects. Big tents were on their surface. The Jovian League headquarters were at Lake Geneva on Callisto.
In the late 22nd century, the moon Enceladus was in the process of terraforming, with an orbiting soletta.
The moon Miranda was settled late in the 22nd century.
Plans to settle its moons existed in the end of the 22nd century.
Plans to settle it existed in the end of the 22nd century.
During the Accelerando, starships were built out of asteroids that were hollowed out and given a spin. Trips to the closest stars where telluric planets suitable for terraforming would last some 20 years.