open cluster, see star cluster star cluster, a group of stars near each other in space and resembling each other in certain characteristics that suggest a common origin for the group. Stars in the same cluster move at the same rate and in the same direction.
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open cluster

or galactic cluster

Any group of Population I (see Populations I and II) stars with a common origin, held together by mutual gravitation (not to be confused with a cluster of galaxies). Stars in open clusters are much more scattered than those in globular clusters. All known open clusters contain from about 10 to 1,000 or more stars (about half contain fewer than 100) and have diameters of 5–75 light-years. More than 1,000 have been discovered in the Milky Way Galaxy; well-known examples include the Pleiades and the Hyades.

open cluster [′ō·pən ′kləs·tər]

(astronomy)

One of the groupings of stars that are concentrated along the central plane of the Milky Way; most have an asymmetrical appearance and are loosely assembled, and the stars are concentrated in their central region; they may contain from a dozen to many hundreds of stars. Also known as galactic cluster.

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No references found	Open clusters such as NGC 4755 typically contain anything from a few to thousands of stars that are loosely bound together by gravity. 'Cosmic jewel box' captured in all its glory by three telescopes by Asian News International 1 star Rho Telescopii, the open cluster ESO 231SC30 displays a faint, definite triangular-shaped grouping pointing sharply south. A spyglass telescope by Streicher, Magda / Monthly Notes of the Astronomical Society of Southern Africa The suspect is Louie Sanchez, whose sister told postal inspectors that she was with her brother and another man when they used a pry bar to open cluster mailboxes in Santa Fe, Albuquerque, Gallup, Bloomfield and Farmington, according to an affidavit filed July 17 in U. POLICE CHARGE MAN IN STRING OF MAILBOX BREAK-INS by The Santa Fe New Mexican (Santa Fe, NM)	open open ammunition space open arc open architecture open assembly time open association open ball open bay open berth open bidding Open Blueprint open boarding open book open box testing open building system open bundle open caisson open cell open chain open channel open chapel open circuit open circular region Open City Open Cloud Manifesto open cluster open coast open community open competitive selection open computing open construction open cornice open covering open crenelation open cut Open CV open cycle Open Data-link Interface Open DataBase Connectivity Open DeathTrap open defect Open Desktop open die Open Directory Project Open Distributed Processing Open Distributed System Architecture Open Document Architecture Open Document Interchange Format Open Document Management API Open Door Open Door Doctrine	Open Chest Closed Pericardium open chest massage open circuit open circuit open circuit open circuit Open Circuit Access Policy Open Circuit Bisection Open Circuit Check Unit Open Circuit Compressed Air Breathing Apparatus Open Circuit Inductance Open Circuit Integrated Dive Surface Valve Open Circuit Interconnection Open Circuit Interval open circuit method Open Circuit Potential Open Circuit Potential - Time Open Circuit Transmission Line Open circuit voltage Open circuit voltage Open Circuit Wind Tunnel open circular region Open Citation open city open city open classroom Open Closed Principle Open Cloud Computing Interface Open Cloud Manifesto open cluster Open Cluster Framework Open Cluster NGC 4755 Open clusters Open clusters open coast Open Code Software Library open colectomy Open Collaboration Environment Open Collaboration Services Initiative Open Collaborative Grid Service Architecture Open Collaborative Research Open Collections Program Open collector Open Collector Interface Open College Open College Network Open College Network - Kent and Medway Open College Network London Region Open College Network North West Midlands Open College Network of the West Midlands Open College Network South East Midlands Ltd. Open College Network South West Open College Network South West Region Open College Network South Yorkshire and Humber Open College Network West and North Yorkshire

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Open clusters such as NGC 4755 typically contain anything from a few to thousands of stars that are loosely bound together by gravity.

'Cosmic jewel box' captured in all its glory by three telescopes by Asian News International

1 star Rho Telescopii, the open cluster ESO 231SC30 displays a faint, definite triangular-shaped grouping pointing sharply south.

A spyglass telescope by Streicher, Magda / Monthly Notes of the Astronomical Society of Southern Africa

The suspect is Louie Sanchez, whose sister told postal inspectors that she was with her brother and another man when they used a pry bar to open cluster mailboxes in Santa Fe, Albuquerque, Gallup, Bloomfield and Farmington, according to an affidavit filed July 17 in U.

POLICE CHARGE MAN IN STRING OF MAILBOX BREAK-INS by The Santa Fe New Mexican (Santa Fe, NM)

Open Chest Closed Pericardium
open chest massage
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Open Circuit Access Policy
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Open Circuit Check Unit
Open Circuit Compressed Air Breathing Apparatus
Open Circuit Inductance
Open Circuit Integrated Dive Surface Valve
Open Circuit Interconnection
Open Circuit Interval
open circuit method
Open Circuit Potential
Open Circuit Potential - Time
Open Circuit Transmission Line
Open circuit voltage
Open circuit voltage
Open Circuit Wind Tunnel
open circular region
Open Citation
open city
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open classroom
Open Closed Principle
Open Cloud Computing Interface
Open Cloud Manifesto

open cluster

Open Cluster Framework
Open Cluster NGC 4755
Open clusters
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open coast
Open Code Software Library
open colectomy
Open Collaboration Environment
Open Collaboration Services Initiative
Open Collaborative Grid Service Architecture
Open Collaborative Research
Open Collections Program
Open collector
Open Collector Interface
Open College
Open College Network
Open College Network - Kent and Medway
Open College Network London Region
Open College Network North West Midlands
Open College Network of the West Midlands
Open College Network South East Midlands Ltd.
Open College Network South West
Open College Network South West Region
Open College Network South Yorkshire and Humber
Open College Network West and North Yorkshire