Abstract: The invention relates to a method for unambiguously identifying an object (1, 2, 3) having one or both of the following features a), b): a) at least one unambiguous identification means (4, 5, 6) is arranged on or in an object (1, 2, 3) that is in the form of a space projectile (1, 2); a transmission signal (11) having electromagnetic waves is sent from a transmission station (7) to the identification means (4, 5, 6) of the space projectile (1, 2) that is in space (15); an identification signal (12) having electromagnetic waves that are returned by the identification means (4, 5, 6) of the space projectile (1, 2) in response to the transmission signal (11) is received in a reception station (9); the space projectile (1, 2) is unambiguously identified using the identification signal (12); b) at least one unambiguous identification means (4, 5, 6) that is set up for directional reflection of an identification signal (12) in response to a transmission signal (11) with a defined reflection direction is arranged