Concept information
Preferred term
nebula
Definition(s)
- A nebula is a cloud of gas and dust in space. There are three general types: emission nebulae, which shine by their own light, reflection nebulae, which reflect light from nearby stars, and dark nebulae, which absorb light and appear dark against a brighter background. When cloudlike material in space is patchy, or of a form that is difficult to categorize as a particular type of nebula, is referred to as nebulosity. Originally, the term "nebula" (a Latin word meaning "mist") was applied to a variety of extended objects in the sky, including what are now known to be external galaxies; for example, the Andromeda Galaxy used to be, and occasionally still is, called the Andromeda Nebula. (Encyclopedia of Science, by David Darling, https://www.daviddarling.info/encyclopedia/N/nebula.html)
Broader concept(s)
Narrower concept(s)
Synonym(s)
- nebulae
In other languages
-
French
URI
http://data.loterre.fr/ark:/67375/MDL-R3KPXTZ5-7
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