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galactic British & World English

Relating to a galaxy or galaxies, especially the galaxy containing the solar system

galactic noise British & World English

Unidentified radio-frequency radiation coming from beyond the solar system

galactic equator British & World English

The great circle of the celestial sphere passing as closely as possible through the densest parts of the Milky Way

extragalactic British & World English

Situated, occurring, or originating outside the Milky Way galaxy

intergalactic British & World English

Relating to, moving, or situated between two or more galaxies