Related link https://www.grc.nasa.gov/www/k-12/airplane/ covers Hypersonics, Beginner's Guide to Kites, Kid's Page explaining how airplanes and jet engines work, Beginner's Guide to Model Rockets, Beginner's Guide to Propulsion, Aerodynamics of Baseball, Aerodynamics of Soccer. It has some repetition with respect to the main link.
Søren Kierkegaard (1813-1855) had notable contributions in ideas such as Leap of faith, Existential despair, Existential philosophy, Angst, Authenticity etc. [1]