deep-sky

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English[edit]

Etymology[edit]

A modern term used primarily by amateur astronomers.

Adjective[edit]

deep-sky (not comparable)

  1. (astronomy) Existing outside of the Solar System; relating to that which exists outside of the Solar System.

Translations[edit]

Usage notes[edit]

  • 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.