German U-Boat Type XXI: Were a class of German diesel-electric submarines designed during the Second World War. They were the first submarines able to operate primarily submerged rather than spending most of their time as surface ships.
The Voyager Spacecraft: Consist of two robotic probes that were built by Jet Propulsion Laboratory in Southern California and launched by NASA in 1977. Their primary mission was the exploration of Jupiter and Saturn. Both Voyagers are now tasked with exploring interstellar space.
Was a German World War II fighter aircraft that first saw operational service during the Spanish Civil War (1939) and later became the backbone of the Luftwaffe's fighter force. The Bf 109 was the most produced fighter aircraft in history with a total of 33,984 airframes produced from 1936 up to April 1945.
The Old Man and the Sea is a novel by Ernest Hemingway tells the story of a battle between an aging, experienced fisherman, Santiago, and a large marlin.