My czech contest image on Theme Space Mision
Very good, maybe the best in space picture made with blender. The only problem is… Are they flying without using their motors?
No more and no less than the Apollo command module. 
Newton’s first law of motion. In reality (that is, not Star Wars), if your accelerate with your engines, then turn the engines off, you will keep going at your current speed forever (or at least until you collide with something).