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Subject
- photometry64
- galaxies52
- observational astronomy46
- optical astronomy22
- globular star clusters17
- galactic and extragalactic astronomy16
- infrared photometry16
- ultraviolet photometry14
- redshifted13
- stars11
- ultraviolet astronomy11
- planets10
- solar system astronomy10
- cosmology9
- magellanic clouds9
- nebulae9
- stellar astronomy9
- variable stars9
- optical astronomy7
- spectroscopy7
