Can I change the Orbit of the mun?

[Kobold91]

Is the orbit of the moons/planets fixed in the game or could I change them with enough force? I understand that the force required to move the orbit of a moon/planet is massive, but if I could overcome the problems, would the game allow me to change or alter the orbits? or are the orbits a fixed and static number?

[Vanamonde]

The motion of KSP's celestial bodies is "on rails," meaning that it's not calculated on the basis of gravity and momentum. They always follow the same paths, and no amount of force will result in a deviation. Some mods will allow you to alter the orbits and other characteristics of the worlds, though.

[Awaras]

And even if they werent fixed, you would need an impossibly large rocket (hundreds of thousands of parts) to make a perceptible change...

[Taki117]

Scott Manley talks about this very thing

[Jimbimbibble]

If you really want to mess with things, try using HyperEdit.