Star Clusters

A grouping of the same types of astronomical objects. For example, stars in the Milky Way can group together into open clusters or globular clusters. Galaxies also group together into cluster of galaxies, and the clusters of galaxies group together into superclusters of galaxies.

Radio Programs

 Hercules Cloud Piling up stars in the outer galaxy Thursday, May 24, 2012
Hercules Cluster A crowded “city” of stars Wednesday, May 23, 2012
Cosmic Clocks The ticking of cosmic clocks Thursday, April 12, 2012
Alien Clusters Alien visitors from other galaxies Friday, March 23, 2012
Moon and Taurus The Moon and two stellar families Tuesday, February 28, 2012
Moon and Hyades Staring into the face of the bull Thursday, January 5, 2012
M15 Debating a medium-sized black hole Saturday, October 22, 2011
Alpha Persei Cluster Tracing a galactic cataclysm Sunday, October 9, 2011
Milky Way’s Heart V Youngsters at the heart of the Milky Way Friday, September 30, 2011
Milky Way’s Heart II A sky-spanning marquee of stars Tuesday, September 27, 2011
M2 An ancient family of stars Saturday, September 17, 2011
Serpens Splitting up a faint constellation Wednesday, September 14, 2011
M7 A bright but distant star cluster Sunday, August 28, 2011
TW Hydra Watching some stellar infants Monday, April 25, 2011
Cancer A famous but faint constellation Saturday, March 12, 2011
M46 and M47 Two prominent "families" of stars Saturday, February 26, 2011
Moving Dipper A stellar family spreads out Friday, February 25, 2011
NGC 1502 A necklace for the celestial giraffe Thursday, January 6, 2011
Ages of Stars Counting stellar birthday candles Wednesday, October 27, 2010
CTB 102 A giant but hidden stellar nursery Wednesday, July 28, 2010

Featured Images

Omega Centauri, the possible core of a defunct galaxy
 Invader! Friday, March 23, 2012
Two globular clusters; a previously known one at right, and a new one in circle
 Star City Wednesday, October 19, 2011
The star cluster M7
 Aging Family Sunday, August 28, 2011

Resources

 Constellation Guide: Aquarius Thanks to its position in the zodiac, not to...
Constellation Guide: Cancer, the Crab Although it is one of the constellations of the...

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