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- astronomical observatories2
- astronomy2
- astrophysics3
- astrophysics - astrophysics of galaxies4
- astrophysics - cosmology and nongalactic astrophysics5
- astrophysics - earth and planetary astrophysics1
- astrophysics - high energy astrophysical phenomena2
- astrophysics - instrumentation and methods for astrophysics10
- astrophysics - solar and stellar astrophysics3