Celestial observation, equipment, and astronomical phenomena
Astronomy is one of humanity's oldest sciences, dating back to ancient civilizations that tracked celestial movements for agriculture and navigation. Modern astronomy began with telescopes in the 17th century and has expanded to include radio astronomy, space exploration, and deep space observation. Amateur astronomy has flourished alongside professional research, creating a rich vocabulary covering equipment, observing techniques, celestial objects, and astrophotography.
Essential terms every beginner should know
Take your knowledge to the next level
Common terms and definitions at a glance
0 terms organized alphabetically
Know a term that's not listed? Your contributions help make this the most comprehensive astronomy glossary on the web.