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astronautics [astronautics]▼◼◼◼ noun[UK: ˌæ.strə.ˈnɔː.tɪks] [US: ˌæ.strə.ˈnɑː.tɪks]
aeronautics [aeronautics]▼ noun[UK: ˌeə.rəʊ.ˈnɔː.tɪks] [US: ˌeəro.ʊ.ˈnɔː.tɪks]