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

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!

Aydogan Koc (born in 1957), German, studied aerospace and mechanical engineering at the Universities of Stuttgart and Darmstadt. He launched his professional career at the Airbus as development engineer in the advanced design office of military aircraft until his last position, senior manager in EADS Space. Aydogan Koc established in 2013 a Sport and Trainer Aircraft Company in Turkey. He has a private pilot license and spends his leisure time with private flights.