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Astro Glossary

Welcome 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.

The Greek Alphabet
The Constellation Names and Abbreviations

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