gala - gase
- galactic
- galactic anticenter
- galactic bars
- galactic bulge
- galactic center
- galactic clusters
- galactic coordinate system
- galactic cosmic rays
- galactic equator
- galactic halo
- galactic latitude
- galactic longitude
- galactic nuclei
- galactic plane
- galactic poles
- galactic rotation
- galactic spurs
- galactic structure
- galactic windows
- galaxies
- galaxy
- galaxy clustering
- galaxy clusters
- galaxy content
- galaxy counts
- galaxy distribution
- galaxy encounters
- galaxy evolution
- galaxy formation
- galaxy mergers
- galaxy voids
- galilean satellites
- gamma cassiopeiae stars
- gamma radiation
- gamma ray astronomy
- gamma ray background
- gamma ray bursts
- gamma ray lines
