deep-sky
English
Etymology
A modern term used primarily by amateur astronomers.
Adjective
- (astronomy) Existing outside of the Solar System; relating to that which exists outside of the Solar System.
Usage notes
- Deep-sky is not used in reference to stellar objects such as individual stars or binary stars, but it may include large clusters of stars.
Translations
object in the night sky other than a solar system object, single star or multiple star system
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