Launchers are tools or devices designed to propel or send objects into the air or space. They can vary in size and function, ranging from simple handheld devices like water balloon launchers to complex systems like rocket launchers. Their primary purpose is to provide the necessary force to overcome gravity and achieve a desired trajectory. In the context of space exploration, launchers are critical for sending satellites, spacecraft, and other payloads into orbit. These systems often include multiple stages, such as the SpaceX Falcon 9 or NASA's Space Launch System, which help maximize efficiency and payload capacity during the launch process.