Supersonic jets are aircraft that can fly faster than the speed of sound, which is approximately 767 miles per hour (1,235 kilometers per hour) at sea level. These jets are designed to travel at speeds greater than Mach 1, allowing them to significantly reduce travel time. The most famous supersonic passenger jet was the Concorde, which operated from 1976 to 2003. Supersonic flight creates a sonic boom, a loud noise caused by shock waves produced when an object exceeds the speed of sound. Due to environmental concerns and noise regulations, commercial supersonic travel has been limited, but new technologies are being developed to make it more sustainable and quieter, such as the Boom Supersonic aircraft.