Magnetic torquers are devices used in spacecraft to control their orientation in space. They work by generating a magnetic field that interacts with the Earth's magnetic field, allowing the spacecraft to change its attitude without using fuel. This is particularly useful for maintaining the correct position of satellites and other space vehicles. These devices consist of coils of wire that create a magnetic field when electric current flows through them. By adjusting the current, operators can manipulate the spacecraft's rotation. Magnetic torquers are often part of a larger attitude control system, which may also include reaction wheels and thrusters.