Mariner 9, the first spacecraft to successfully go into orbit around Mars launched on May 30, 1971, and arrived November 13, 1971 for a duration of 167 days. This is the same pattern that has held up for more almost 50 years of Mars exploration: approximately 150-300 days.
Enigma was invented by the German engineer Arthur Scherbius at the end of World War I. Early models were used commercially from the early 1920s, and adopted by military and government services of several countries, most notably Nazi Germany before and during World War II.
The Enigma cipher machine was invented by a German engineer, Arthur Scherbius, who applied for his patent on February 23, 1918.otors IV and V are missing. This Enigma machine was used by the Nazis in occupied Norway and post-war by the Norwegian Police Special Branch (Overvaakingspolitiet). The Norwegians changed the wiring in the rotors and the reflector and also stenciled the 40. on the outside and on the battery box.