Collections
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Know galaxies (SIMBAD) by Shigeru (10 subjects)
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Possible quasar / AGN (no SIMBAD) by Shigeru (10 subjects)
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Galaxy by anoxie (10 subjects)
Disk Detective Talk
Know galaxies (SIMBAD) by Shigeru (10 subjects)
Possible quasar / AGN (no SIMBAD) by Shigeru (10 subjects)
Galaxy by anoxie (10 subjects)