I was just working on a galaxy preset option yesterday.

In the next update you'll be able to spawn galaxies from the preset menu and then move them around with the mouse. You'll also be able to move Saturn and it's rings will stay with it.
Are you wanting to create a solar system (like our own) and then be able to zoom out and see the galaxy?
Well, yes I have. With a current solar system i'm working on (I belived I sent it to you on "feedback" email.) Wouldn't look very realistic if it were to linger in the universe not being parented by a Galaxy. Thanks Dan. Also, such as moving Saturn with it's rings still attached sounds nice, I created a planet (Called Merji) in my solar system to have rings, but I had trouble moving both the rings and the planet itself.