The Wright Brothers are famous for being the first individuals to fly an airplane successfully back in 1903. While the plane itself was primitive at best, it's somewhat awe-inspiring to consider just how massive and advanced aircraft have become since then.
While plenty of private airplanes and jets today are quite small, a whole host of super heavy planes that dwarf the Wright Brothers' aircraft exists today. Among some of the biggest fliers are the Boeing 747-8, the AirBus A380, and the Antonov-An 225.
Soon, another large type of aircraft will push the size boundaries of modern airplanes: the Stratolaunch. This giant flying machine will have a wingspan longer than any other aircraft flown today, and it will see its maiden flight in 2019.
Air travel has come a long way since the Wright Brothers, and at this rate, it doesn't look like air travel innovation will be slowing down anytime soon.