31 dic 1944 anni - 1944 Capt. Edward Ruppelt, USAF, Project Blue Book, writing in 1956 on Hermann Oberth "Herman Oberth, the father of the German rocket development, said that the UFO's were definitely interplanetary vehicles."

In Their Own Words: Government, Military and Scientific Figures on "Orb" / "Tic-Tac" UAP's, 1945-present (including "sphere" / "spherical" / "globe" / "round" / "ball" / "oval" / "cigar" / "egg" / "teardrop" / "ellipse" / "elliptical" / "cylinder" / "cylindrical" / "elongated" / "oblong" / "diamond" / "foo fighter" / "ghost rocket")