First of all, I'm a noob. So try not to laugh at me too hard when answering this. I am having a problem returning from the Mun once I make a landing. I am currently using the liquid fuel engine that has 200 thrust output and using the long, skinny fuel cans for the source. My problem is that I burn up too much fuel trying to decelerate to the surface and have none left to get back. My question is twofold. First of all, is there a landing trajectory that will decrease my speed without using as much thrust? Second, would a nuclear powered engine be a more efficient choice and still get the job done (make orbital maneuvers and decelerate enough to land safely. Also I would appreciate any plans for decelerating to the Mun (altitude-speed indicators). Thanks!