Kerbal Space Program is a computer game in which the player builds
spacecraft, aircraft, and spaceplanes and sends them on various
missions. Not only is the game a great deal of fun, playing it helps
develop an intuitive sense for rocket design and engineering
and orbital mechanics, even among people who already understand these
topics at the mathematical level. The graphics in the game are
superb. This document is a collection of screen captures from
missions I've flown.