Sol

Sol is the name of Earth's solar system. In the game, it contains Mercury, Venus, Earth, the Moon, Mars, Jupiter, Ganymede, Saturn, Titan Uranus, Neptune, and Sol, the system's star. Notably Pluto is missing from the game, but that is due to the fact that its status as a true "planet" was officially revoked.

The Sol system is an in-game representation of the real Solar system in the Milky Way. It was first discovered to be in the game when, during a demonstration at NASA, Will Wright used a console command to warp his spaceship to Earth. The full demonstration can be viewed here.

Sol can be found at: Angle 225.06, Distance: 7,295.43. This information can be found when you hover your mouse over the spaceship icon near the bar. Note that this isn't actually true - the angle/distance display on the UFO at the bottom of the screen correlates to the core of the galaxy, not the Sol System.