They certainly teach things to the scientists who take them and see them for the first time, but to an average person they are just a pretty picture. But not if they are coupled with an explanation of what was discovered using the particular image. But personally I think it is outside the scope of KSP. Astronomy and cosmology are *huge* areas of study, and orbital mechanics and rocket science are enough for any game to tackle I think... What would be better is an "education" mode where various concepts are explained in real time on your ship, e.g. drag, lift, thrust, trajectory, ballistics, terminal velocity etc.