What is Clusters: Definition and 70 Discussions

Star clusters are large groups of stars. Two main types of star clusters can be distinguished: globular clusters are tight groups of hundreds to millions of old stars which are gravitationally bound, while open clusters are more loosely clustered groups of stars, generally containing fewer than a few hundred members, and are often very young. Open clusters become disrupted over time by the gravitational influence of giant molecular clouds as they move through the galaxy, but cluster members will continue to move in broadly the same direction through space even though they are no longer gravitationally bound; they are then known as a stellar association, sometimes also referred to as a moving group.
Star clusters visible to the naked eye include the Pleiades, Hyades, and 47 Tucanae.

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  1. kimi7335

    I The purpose of trigonometric axes in plot of electron clusters, ATLAS

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  2. F

    A Optimizing Grouping of People for Teamwork

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  3. J

    Why globular clusters don't collapse.

    I asked Bard that question and it responded (among other things) that a) globular clusters are spherical and b) that they are spinning rapidly. Aren't those two things contradictory, as in they should be flattened by centrifugal forces?
  4. harryharns

    C/C++ Perform RK4 between 2 Clusters in Magnetic Field

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  5. S

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  6. M

    A Globular clusters in SDSS data

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  7. ohwilleke

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  8. Buzz Bloom

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  9. alantheastronomer

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  10. G

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  11. L

    I Minimal number of clusters

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  13. Solomei

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  14. nomadreid

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  15. TheChemist_

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  16. Jamison Lahman

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  17. K

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  18. A

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  19. Jules Winnfield

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  20. BadgerBadger92

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  21. J

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  22. D

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  23. kelvin490

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  24. Earnest Guest

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  25. P

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  26. M

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  27. K

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  28. S

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  31. vrmuth

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  33. DennisN

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  34. S

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  35. T

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  36. K

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  37. A

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  38. H

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  39. R

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  40. V

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  42. H

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  43. N

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  44. M

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  45. marcus

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  46. A

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  47. R

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  48. R

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  49. R

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  50. D

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