Flight is the process of moving through the air, typically achieved by birds, insects, and aircraft. It involves generating lift, which allows an object to rise and stay in the air. The principles of flight are based on aerodynamics, which studies how air interacts with solid objects. In nature, birds use their wings to create lift, while insects may use flapping motions. In contrast, aircraft rely on engines and wings to achieve flight. The study of flight has led to advancements in technology, enabling humans to travel long distances quickly and efficiently.