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 …

These are some of the most common astronomy terms used in the field. Browse the list to become more familiar with the hobby and science of astronomy.

This glossary is designed to help demystify some of the most commonly used astronomy terms, making it easier for everyone to comprehend the celestial events and phenomena that occur in the night sky.

Jul 26, 2024 · Astronomy encompasses a vast array of fascinating terms and concepts. The field spans from celestial mechanics to astrophysics, covering phenomena both near and far in our universe.

If you ever wonder the meaning of an astronomical word, search no further and browse below to find the definition of the space term. The following are terms from A-Z related to space & astronomy:

Below is a list of definitions and explanations to help you navigate astronomical texts and services. In astronomy, the term albedo refers to the brightness of an object in space. Derived from Latin, albedo …

This glossary of astronomy terms contains definitions for some of the most common words used in astronomy, cosmology, astrophysics, and space exploration. You can click on any letter of the …

Jul 18, 2025 · This glossary brings together concise, factual, and rigorous definitions of the main terms used in astronomy and astrophysics. Each term is presented with its technical definition to better …

Astronomical Unit (A.U.) - The average distance from the Earth to the Sun. Astrophysics - The science of applying the laws of physics to the universe. Belts - Dark bands around certain planets, like …

Browse through our astronomy dictionary to find definitions for some of the most common terms used in practical astronomy and space science. Click on one of the letters below to search for a term.