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Imagine the Universe! Dictionary - http://imagine.gsfc.nasa.gov/docs/dictionary.html
NASA Dictionary intended for students age 14 and up. |
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Eric Weisstein's World of Astronomy - http://scienceworld.wolfram.com/astronomy/
Most comprehensive resource; includes among others the fields of Galactic Astronomy, Observational Astronomy, Solar System, Stars, and Remote Sensing. |
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Nomenclature of Celestial Objects - http://vizier.u-strasbg.fr/cgi-bin/Dic
Dictionary with full references on the designations of astronomical objects and their acronyms. |
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PSRD Glossary - http://www.psrd.hawaii.edu/PSRDglossary.html
Glossary for Planetary Science Research Discoveries covers terms related to the latest research on meteorites, planets, and other solar system bodies. |
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Astronomy Dictionary - http://dictionary.babylon.com/science/astronomy
Combined look-up of several dictionaries with simple and clear definitions of technical terms. |