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Subject
- observational astronomy14
- galaxies8
- optical astronomy6
- galactic and extragalactic astronomy5
- optical astronomy4
- ultraviolet astronomy4
- infrared astronomy3
- galatic evolution2
- dark matter1
- extra-galactic stars1
- galactic evolution1
- galaxy evolution1
- galaxy evolution and structure1
- globular clusters1
- planetary nebulae1
- solar system astronomy1
- star formation1
- stucture1
- supernovae1