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Wikipedia:Dewey Decimal System/520
Dewey Decimal System > 5 Natural Sciences and Mathematics > 52 Astronomy and Allied Sciences > 520 Astronomy and Allied Sciences
- Astrometry
- Astronomy
- Astronomy and astrophysics
- Astronomy and Astrophysics basic topics
- Astrophysics
- Big Bang
- Big bang nucleosynthesis
- Cosmic microwave background radiation
- Cosmic rays
- Earth
- Electromagnetic radiation
- Electromagnetic spectrum
- Extragalactic astronomy
- Galactic astronomy
- Galaxy
- Galaxy formation
- History of astronomy
- Hubble's law
- Nebula
- Nova
- Optical astronomy
- Planet
- Radio astronomy
- Space observatory
- Solar system
- Star
- Star cluster
- Star formation
- Stellar astronomy
- Stellar evolution
- Telescope
- Wavelength
- X-ray astronomy
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