Deep-Sky Object
Stellar Association
A loose grouping of young related stars.
Unbound groups of young stars sharing a common origin, including OB, T (T Tauri), and R (reflection-nebula) associations.
Overview
Unbound groups of young stars sharing a common origin, including OB, T (T Tauri), and R (reflection-nebula) associations.
See also
OB Association
A loose group of hot massive stars.
Pleiades (M45)
The Seven Sisters — a young blue cluster.
Bok Globule
A small, dark dust cocoon harbouring a young star.
Circumplanetary Disc
A disc of material around a young giant planet.
Giant Molecular Cloud (GMC)
Molecular-cloud structure or process associated with the formation of stars.
Molecular Cloud Complex
Molecular-cloud structure or process associated with the formation of stars.