Why doesn't the sky fall down on our heads?. Aydogan Koc

Аннотация:

Why is there no air in space? How does lift arise? What is a Sonic boom? How does a propeller work? Why do migratory birds fly in V formations? Why do airplanes fly so high? Aerospace is full of mystery!
Aeronautical and space questions answered in a simple and understandable way!