ET-Footsteps,  Hypotheses (Hypoteser) ...

https://sites.google.com/view/et-footsteps/topic/hypotheses

Files (in use):

SETI-kædebrevet 

(The SETI Chain Letter)

https://sites.google.com/view/et-footsteps/files/24-xxx/24-6xx/24-674

Hypotese angående UFO'ernes aerodynamik 

(Hypothesis regarding the aerodynamics of UFOs)

https://sites.google.com/view/et-footsteps/files/25-xxx/25-3xxx/25-322