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Mfgenggear, There is no conclusive evidence of disk shaped UFOs. However, at great speeds a disk shape would create a loud sonic boom in Earths atmosphere. Rendering a UFO of this shape easily identifiable by this sound and shape, if it were observed (making it a non-UFO or identified object)...

This question has been satisfactorily answered. Spherical is the best shape for a spacecraft. Wind tunnel experiments have proven this. Though there is no air or physical wind in space having a vehicle that can accomplish a variety of missions is key in designing a 'well rounded' spacecraft...

bb's in clay... proly the best way to get a negative uniform surface to mold. or you could put a cast onto a golf ball and get a positive impression...

Next window surface will be clear sapphire at least by military and aerospace organizations. Surprisingly they can make rods and wafers in just a couple days that can be formed into larger windows. (Sapphire is the second hardest gemstone and is naturally clear, blue is from metals in the...

Not cad program site... cad program article, thanks for the mislead.

There are a variety of launch vehicles in society. Ballistic, shuttle and experiments designs. What is the best? has one been discovered? In golf the divots make the ball more aerodynamic but you'll never see an f-16 mechanic hammering dents into the plane...