The Antonov AN-225 is the biggest airplane in the world. Its wingspan measures 290 feet... longer than five semi-truck trailers set end-to-end. http://cnn.it/1WQh5eK | CNN International

The world's largest airplane, the Stratolaunch, is designed to release rockets that will carry satellites into space and has a 385-foot wingspan, features six engines used by the Boeing 747, stands 50 feet tall and can carry more than 500,000 pounds of payload http://cnn.it/2rgwqeG | CNN