To all those complaining about the physics of the game:
Yes, the physics are faulty. A) Any spacecraft would have to travel at such a high speed that a mid air collision would cause it to explode into several thousand pieces, not just rotate. B) If a spaceship gets past Earth's orbit and runs out of gas, it does not fall "backwards." C) A wooden spaceship would invariably incinerate well before it reached escape velocity. D) It is impossible for planes most commercial planes to "hover" several thousand feet above the Earth. E) Reality is not actually 2 dimensional. F) There would be no real difference between nitro and regular fuel in space, although more powerful fuel would help you during takeoff.
Beyond that you should really not be complaining. If you repeatedly spin out of control after hitting an obstacle, you should learn to either avoid hitting them (try the "back" button), or learn to hit them at an angle that will cause the least amount of spin (if all else fails: dead on). If you get frustrated, stop playing. It is not the designer's fault that you did not win.
This was a fun game. The idea has been done before, but this is a nice addition to the genre. What I particularly enjoyed was that there were multiple pathways to victory. The player could actually choose how to design their craft and there was no "right" answer since you can reach the moon by being either A) fast B) maneuverable or C) with a BIIIG gas tank (probably some combo of these). This game was fairly straightforward, and pretty relaxing. It was not so much difficult as challenging (and moderately challenging at best - pretty easy actually), but that made it a good choice for late night homework-avoidance. There is not much in the way of replay value, but for an hour of diversion it is a good bet.