Related Searches
on Ask.com
Globular cluster - 3 dictionary results
globular cluster
–noun Astronomy.
| a comparatively older, spherically symmetrical, compact group of up to a million old stars, held together by mutual gravitation, that are located in the galactic halo and move in giant and highly eccentric orbits around the galactic center. |
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source
| globular cluster
n. A system of stars, generally smaller in size than a galaxy, that is more or less globular in conformation. |
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
globular cluster
 (glŏb'yə-lər) Pronunciation Key
A spherical mass made up of thousands to hundreds of thousands of densely packed stars of nearly the same age (typically very old). Globular clusters occupy the inner regions of a galactic halo and revolve around the nucleus of galaxies in highly elliptical orbits inclined to the disk of the spiral arms. There are approximately 150 of these clusters in the Milky Way. It is believed that globular clusters can provide information about the evolution and lifespan of stars. Compare open cluster. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Share :
Copyright © 2008, Dictionary.com, LLC. All rights reserved.
