Alright, so I have a game that I already made, the concept is that there are "planets" that do not move and ships that can stand still without being sucked in to the gravity of the planets.

I need some way to explain how those huge planets are standing around the way they are and how the players are able to stay away from the planets.

 - The planets are not necessarily spinning around a star, they could be spinning around any celestial body you want or not spinning around anything at all. 

 - I'm not looking for hard science, I'm looking for plausible ways to explain this.

 - The planets are spinning around themselves but not each other.

 - To be even more clear, this does NOT have to be a naturally occurring phenomena. It can be a man made system.

Reference gif:
https://media.giphy.com/media/l0Iy1ObhDXY9FW3bG/giphy.gif