The rotation speeds and orbits of the various planets around the Sun can be changed with the number keys. The one equals one minute per second, the two, one hour per second, the three, a day per second, and the four, four months per second.
The bottom section shows the equivalent movement of the planets in real-time.
The space bar displays the mouse pointer. Click on the celestial bodies to show its characteristics. The arrows allow you to move through the universe.