From the developer: "Fly Through The Universe is a 3d space simulator that lets you fly through the solar system like in a video game without limiting you to still pictures or predetermined flight paths. The program allows you to see the planets and sun with their sizes and orbital distances to scale. The program also includes a solar system map and has no special hardware or software requirements."

Note The full version includes many planetary moons and allows the user to use planets other than earth as a starting point.