Deep-Sky Object

Highlights

• ›Clusters, nebulae, and galaxies — the deep sky beyond the stars

Examples & related concepts

• Open Cluster
• Globular Cluster
• Emission Nebula
• Planetary Nebula
• Messier Catalogue
• New General Catalogue (NGC)

Knowledge connections

• Associated withOpen Cluster
• Associated withGlobular Cluster
• Associated withEmission Nebula
• Associated withPlanetary Nebula
• Associated withMessier Catalogue
• Associated withNew General Catalogue (NGC)

Sources

Facts on this topic will be cited from these primary and reference sources.

• NASANational Aeronautics and Space Administration

  Mission data, planetary science, space telescopes, and public-domain imagery.

  Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.