Linked from

The 48 pages that link to Globular cluster, each with the reason it gives.

• Milky WayNarrower topic: The Milky Way’s globular clusters preserve some of its oldest stellar populations.

• Stellar populationBroader topic: Its stars provide a relatively contained population for studying age and chemical variation.

• Dynamical frictionRelated: Dynamical friction can make massive clusters lose orbital energy and sink toward galactic centers.

• Elliptical galaxyCompared with: A globular cluster can look like a compact elliptical but contains far fewer stars and no comparable dark-matter halo.

• Color–magnitude diagramBroader topic: Its well-defined turnoff makes its diagram useful for estimating cluster age.

• Open clusterCompared with: Its compact structure and ancient population contrast with the loose, often young open cluster.

• Tidal strippingRelated: Tidal stripping can remove its outer stars and contribute to the Milky Way's stellar halo.

• RR Lyrae variableRelated: RR Lyrae stars in globular clusters help measure cluster distances and trace their populations.

• Galaxy interactionRelated: Some mergers form new clusters, while tidal forces can strip existing ones.

• Harlow ShapleyRelated: Shapley mapped these clusters to infer the Milky Way’s size and center.

• Horizontal branchRelated: Its color–magnitude diagram often displays a well-populated horizontal branch.

• Dwarf galaxyCompared with: Globular clusters can look like compact dwarfs, but generally lack dark-matter-dominated galaxy structure.

• Stellar streamCompared with: A cluster can be the compact progenitor from which a stellar stream is stripped.

• Messier catalogBroader topic: Many catalog entries are globular clusters, including the prominent M13 and M22.

• Stellar associationCompared with: Its compact, strongly bound structure contrasts with an association's youth and looseness.

• Star clusterBroader topic: Globular clusters contrast with open clusters in age, density, and location.

• Stellar ageBroader topic: Its oldest stars constrain the early history and minimum age of the Milky Way.

• Binary black holeRelated: Repeated encounters there can assemble and harden black-hole binaries.

• Galactic haloBroader topic: Many globular clusters orbit far beyond a galaxy’s disk.

• Magellanic CloudsRelated: The Clouds’ clusters reveal their stellar histories and chemical enrichment.

• Stellar dynamicsBroader topic: Its high stellar density makes encounters and relaxation especially important.

• Antennae GalaxiesCompared with: Some young clusters born in the encounter may resemble globular clusters as they age.

• Blue stragglerNarrower topic: Globular clusters provide crowded environments where both binary evolution and stellar encounters produce stragglers.

• Galactic tideBroader topic: Its outer stars can be stripped by the Galaxy, leaving tidal tails and streams.

• Omega CentauriNarrower topic: Omega Centauri is an unusually massive example of this class of stellar system.

• Nuclear star clusterCompared with: Its outer-galaxy location contrasts with the nuclear cluster’s central position.

• Population II starBroader topic: Many globular clusters contain old, metal-poor stars traditionally classified as Population II.

• Satellite galaxyCompared with: Some disrupted satellites leave globular clusters, but a cluster is not itself a galaxy.

• 47 TucanaeNarrower topic: 47 Tucanae is a prominent example of this class of stellar system.

• Fornax ClusterNarrower topic: NGC 1399 is surrounded by an unusually rich population of these star systems.

• Intermediate-mass black holeRelated: Claims of central black holes in these clusters remain contested and affect estimates of abundance.

• Messier objectBroader topic: The catalogue includes prominent examples such as Messier 13.

• Red-giant branchRelated: Its red-giant branch helps reveal the cluster’s age and chemical composition.

• Sombrero GalaxyRelated: Its unusually rich globular-cluster system helps probe the galaxy’s formation and halo.

• Type II CepheidRelated: Old stellar populations in globular clusters can contain Type II Cepheids.

• Allan SandageBroader topic: Sandage used the stars in globular clusters to estimate the Milky Way’s age.

• Messier 13Narrower topic: Messier 13 is a classic example of this stellar system.

• Super star clusterCompared with: Comparing young super star clusters with globular clusters tests whether some can become their long-lived counterparts.

• Galactic astronomyBroader topic: Their old stars and varied orbits provide evidence about early Galactic assembly.

• Intergalactic starCompared with: Some stripped stars originate in globular clusters, which can remain bound after leaving a galaxy.

• Jeans equationsBroader topic: Its stellar kinematics can be modeled to estimate mass and orbital structure.

• Messier 15Narrower topic: Messier 15 is a compact example of this stellar system type.

• Messier 22Narrower topic: Messier 22 belongs to this class of compact stellar systems.

• Messier 49Related: Messier 49 is surrounded by an unusually rich population of these stellar systems.

• TucanaNarrower topic: Tucana’s 47 Tucanae is among the sky’s brightest and richest examples.

• Formation and evolution of stars and galaxiesBroader topic: Its stars preserve evidence about early episodes of star formation in galaxies.

• Messier 4Narrower topic: Messier 4 is a nearby example of this class of star system.

• Messier 7Compared with: Its density, age, and structure sharply distinguish it from Messier 7’s open cluster.