I have recently had the opportunity to visit London, Paris, and Edinburgh. That is why my blog has been absent the past couple of weeks. One of the things my wife and I did was to ride the Eurostar train from London to Paris (through the “chunnel”). Something that struck me, is the similarity between a high speed train and an airliner. The interior cabin looks very similar. Walking into the train, if you didn’t know better you might think you were on a plane. But it is the external appearance that I want to talk about. Both the high speed train and the airplane need to be streamlined to minimize wind resistance. You don’t want a lot of wind resistance (except under the plane’s wing where wind resistance is a good thing). The streamlined design carries with it an inherent beauty, symmetry and smooth lines. Space ships also need a streamlined shape if they are going to be travelling through an atmosphere. But if they are not going to be travelling through an atmosphere, they ca