"lock" that position or object to the display's center so you can more easily follow it over time changes. (It is also possible to lock objects using keyboard commands.) Skyglobe can be made to animate the changes of any of its parameters with its "turbo" function, most commonly used to speed up time. The turbo function can animate the changes of centuries or millennia to demonstrate precession. See also Space flight simulation game List of space flight simulation games Planetarium software List of observatory software References External links SkyGlobe download CircumSpace 1.0 download site Astronomy software DOS software