While looking at ÃŽâ€v maps, I don't quite understand why to land on the Mun I ought to first orbit it. And the same for leaving Kerbin -- is it really better to first orbit it, and then Hohmann transfer to Mun? That would make sense if I were going to leave an orbiting station, land on a detachable module. But if I'm going to just land, isn't it better to shoot straight to the Mun, and then decelerate to land? And a related question: how is better (in terms of ÃŽâ€v) to inject into Mun orbit -- from behind it (counter-clockwise, same direction as the Mun itself around Kerbin), or from the front (clockwise)? Of course, all that is valid for other bodies, Kerbin and Mun are just examples.