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The term galactic binary is used for a binary pair of objects (co-orbiting) within the Milky Way, the term typically used when discussing particular types of binaries such as compact object binaries. Typical (e.g., main-sequence) binary stars are generally studied within the Milky Way, and the term galactic binary is generally used when there is reason to distinguish them, i.e., for types of binaries that are sometimes also studied at inter-galactic distances, e.g., black hole mergers now observed through GW detections.