The interstellar rebahin, also known as interstellar gas transfer, refers to the process by which material is exchanged between stars and the interstellar medium (ISM). The ISM is the diffuse gas and dust that fills the galaxy, serving as a reservoir for star formation and a sink for stellar ejecta. The rebahin is thought to occur through various mechanisms, including stellar winds, supernovae explosions, and gravitational interactions between stars.