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Subject
- dark matter1
- galactic and extragalactic astronomy2
- galatic evolution3
- galaxies4
- globular clusters1
- infrared astronomy3
- interstellar medium1
- observational astronomy8
- optical astronomy1
- optical astronomy5
- optical observations1
- star formation1
- stars1
- stellar evolution1
- supernovae2
- ultraviolet astronomy[remove]10
- ultraviolet images1