deep-sky
Adjective
Meaning
deep-sky (not comparable)
(astronomy) Existing outside of the Solar System; relating to that which exists outside of the Solar System.
Examples
Although the constellation lies in the Milky Way and contains many stars, deep-sky objects are not prominent.
It has a planet with around 30% the mass of Jupiter that has an orbital period of 615 days. citation HD 219077 has a planet around 10 times as massive as Jupiter in a highly eccentric orbit. citation Deep-sky objects Globular Cluster 47 Tuc.
It is 670 light-years from Earth and the components are distinguishable in a small telescope.sfn Deep-sky objects Several galaxies and star clusters are contained within Capricornus.
Deep-sky objects As the Milky Way runs through Puppis, there are a large number of open clusters in the constellation.
Deep-sky objects The Coalsack Nebula is the most prominent dark nebula in the skies, easily visible to the naked eye as a prominent dark patch in the southern Milky Way.
These stars are thought to be significant contributors to interstellar dust. citation Deep-sky objects The band of the Milky Way goes through Canis Major, with only patchy obscurement by interstellar dust clouds.