NeKiNa

I am not sure how this happened but after I got into orbit my rocket just stopped working, I turned it off to navigate the orbit and fix my routing to try and go to the mun but when I went back to the spaceship view it won't let me start the rocket again. I maximized the thrusters and no luck. Now my Stayputnik is stuck in orbit no idea what happened there. Can anyone bring light to this matter? I know its not a big deal but do you think its a bug or what?