Astro GlossaryWelcome to SkyandTelescope.com's Astro Glossary. This page is intended to serve as your personal astronomy dictionary and pronunciation guide. Below are two links to stories: an article about the Greek letters found throughout most of the world's star charts, and a second article that provides audio files for each of the 88 constellations.
You'll also find a robust dictionary containing the most common astronomical terms as defined by the editors of Sky & Telescope. Simply type in the word you want a definition to in the box below. If you cannot find the word for which you want a definition, please drop us a note. Due to the volume of mail, not all questions can receive personal replies.