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Subject
- ultraviolet astronomy[remove]11
- observational astronomy6
- galaxies5
- optical astronomy5
- spectroscopy3
- galactic and extragalactic astronomy2
- galatic evolution2
- infrared astronomy2
- line intensities2
- quasars2
- chemical abundances1
- dark matter1
- globular clusters1
- interstellar medium1
- north galactic pole1
- redshifted1
- star atlases1
- star formation1
- stars1
- stellar evolution1