Was a hydrogen-filled, rigid airship which operated commercially from 1928 to 1937. During that time it made 590 flights and flew more than a million miles. The Zeppelin could achieve a top speed of 80 mph (70 knots) at its maximum thrust of 2,650 horsepower and had a useable payload of 15,000 kg (33,000 lbs).
Is a 1930s biplane designed by Geoffrey de Havilland and was operated by the Royal Air Force (RAF) and others as a primary trainer. It is a very easy plane to fly with a stall speed of only 25 knots. However, it has no electrical system and must be started by hand.
Is a British four-engine heavy bomber used by the RAF in World War II. It became the most successful night time bomber of the war and flew 156,000 sorties. The bomber gained additional distinction for carrying the famous Upkeep "Bouncing bomb" for Operation Chastise in attacks on dams in the Ruhr Valley.
Mars Exploration Rover NASA's twin rovers, named Spirit and Opportunity, launched separately in 2003 and landed three weeks apart in January 2004. They made important discoveries about wet environments on ancient Mars that may have been favorable for supporting microbial life. Although Spirit ceased communicating with Earth in March 2010, Opportunity continues its work on the Red Planet.