Glossary of astronomy
Template:Short description Template:CS1 config This glossary of astronomy is a list of definitions of terms and concepts relevant to astronomy and cosmology, their sub-disciplines, and related fields. Astronomy is concerned with the study of celestial objects and phenomena that originate outside the atmosphere of Earth. The field of astronomy features an extensive vocabulary and a significant amount of sophisticated terminology.
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Template:Gli between the orbital periods of two planets (small bodies), both of which are orbiting a large central star. The inner planet completes two revolutions in the time it takes the outer planet to complete one.
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See also
- Outline of astronomy
- List of astronomical catalogues
- List of astronomy acronyms
- List of common astronomy symbols
- Modern constellations
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