Celebrated on December 7th
While birds have been flying for millions of years, it's something relatively new to humans and we rely on some important scientific principles to achieve it. Beginning with simple kites, humans have moved on to develop gliders, airships, helicopters, commercial planes and even supersonic flight.
In 1878, flight was only a dream. Airplanes and helicopters hadn't been invented yet but seven year-old Orville Wright and his 11 year-old brother Wilbur had a dream. They began building and testing a machine that could fly people. They were the first to understand flight. On December 17, 1903 Orville piloted the first flight. It lasted only 12 seconds - but it worked! They managed four flights that day and the final one lasted 57 seconds. On December 17th, the Wright brothers became the first people to fly a machine, heavier than a hot air balloon, under the complete controls of a pilot.
The largest paper aircraft, with a wing span of 18.21 m (59.74 ft), was made by students and employees in Germany on 28th September 2013. The longest that a paper airplane has ever stayed up in the air was 29.2 seconds.