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

Messier 22 “Discovering” an ancient star cluster Monday, August 24, 2015
Polaris Flare A future stellar nursery Thursday, August 20, 2015
First Stars II Brilliant clusters in the early universe Friday, July 17, 2015
Venus in the Beehive Closing in on a beehive Sunday, June 7, 2015
Omega Centauri Alien visitors from other galaxies Tuesday, May 26, 2015
M92 An ancient family of stars Wednesday, May 13, 2015
M13 A cluster of old, faint stars Tuesday, May 12, 2015
M87 Cluster A cosmic bullet from a black hole Saturday, April 25, 2015
M3 Reinvigorating some old stars Tuesday, March 17, 2015
Pandora’s Cluster Mapping a galactic pile-up Tuesday, March 10, 2015
On the Frontier Pushing the intergalactic frontier Monday, March 9, 2015
Morning Moon A bright future for the scorpion Thursday, February 12, 2015
Moon and Taurus Families of stars flank the Moon Saturday, September 13, 2014
M15 A fading family of ancient stars Thursday, September 11, 2014
Old Family Looking into an old stellar family Saturday, July 26, 2014
Outcast Star A stellar outcast in the Big Dipper Tuesday, July 22, 2014
Moon and Antares Siblings that age at different rates Tuesday, July 8, 2014
Serpens South Young stars that are hidden from view Tuesday, June 24, 2014
Disappearing Cluster An evaporating star cluster Monday, June 2, 2014
Messier 3 Tracking down false comets Wednesday, May 28, 2014
Hercules Cluster A starry realm without night Tuesday, May 27, 2014
Globular Clusters Stellar neighborhoods where it never gets dark Monday, May 26, 2014
Galactic Archaeology Digging into the history of the galaxy Monday, March 24, 2014
Castor Rare sextuplets among the stars Saturday, March 1, 2014
Rosette Nebula A colorful stellar birthplace Friday, February 28, 2014
NGC 2264 Lighting up a stellar nursery Wednesday, February 26, 2014
Evening Clusters Star clusters for the charioteer Sunday, January 19, 2014
Escaped Star A star that escaped from its nest Friday, November 29, 2013
Merging Stars Two stars that become one Saturday, October 5, 2013
The Coathanger Gazing deep into a coat hanger Thursday, September 26, 2013
M18 A faint cluster with a bright pedigree Sunday, August 25, 2013
M4 An ancient city of stars Sunday, August 4, 2013
Megrez Holding together the Big Dipper Saturday, July 27, 2013
M13 Some bright stellar mysteries Sunday, May 19, 2013
Hercules The strongman strides across the night sky Saturday, May 18, 2013
Keeping Tabs Keeping an eye on a fuzzy foot Wednesday, May 8, 2013
Star Factory A massive factory for making stars Thursday, May 2, 2013
Coma Star Cluster Golden tresses and glistening stars Thursday, April 18, 2013
Moon in Taurus Drawing some stellar pictures Saturday, April 13, 2013
The Beehive Brightening up a meager constellation Friday, February 15, 2013
Double Cluster Sparkling stellar jewels Sunday, February 10, 2013
Nowhere to Hide Hiding in plain sight Thursday, January 31, 2013
M31’s Central Cluster Bright stars around a galaxy’s dark heart Tuesday, January 29, 2013
M35 A crowded stellar neighborhood Friday, January 18, 2013
M2 A distant home for old stars Sunday, January 6, 2013
Mirfak The hero’s brightest star Monday, October 29, 2012
Capricornus The edge of the celestial sea Friday, October 12, 2012
M11 A flock of young stars Thursday, August 9, 2012
Galactic Nests Keeping the chicks close to the nest Sunday, July 22, 2012
Family Breakup A stellar family breaks up Friday, June 8, 2012
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
Immigrant Clusters Invaders from other galaxies Wednesday, July 7, 2010
Mizar and Alcor Galloping across the northern sky Saturday, June 19, 2010
Hercules Clusters II Skies full of old stars Thursday, May 6, 2010
Hercules Clusters Relics of the early universe Wednesday, May 5, 2010
Youthful Oldies Rejuvenation in an old star cluster Thursday, March 4, 2010

Featured Images

Two views of Messier 22
Stellar Sparkler Monday, August 24, 2015
Hubble Space Telescope view of the core of M13, a globular cluster in Hercules
Old Sparklers Tuesday, May 12, 2015
Hubble Space Telescope image of a young star cluster
Anniversary Portrait Thursday, April 23, 2015
M3, a globular star cluster
Reborn Stars Tuesday, March 17, 2015
Elephant Trunk Nebulan
Elephant's Trunk Sunday, October 12, 2014
Hubble image of star cluster M15
Old Family Thursday, September 11, 2014
Infrared view of Serpens South star cluster and nebula
Unmasking Hidden Stars Tuesday, June 24, 2014
M44, the Beehive Cluster
Vanishing Beehive Monday, June 2, 2014
NGC 3590
Young and Future Stars Thursday, May 22, 2014
Close-up of the core of M31
M31 Blues Tuesday, January 29, 2013
Hubble Space Telescope view of globular cluster M2
Stars Galore Sunday, January 6, 2013
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
A "family" of young stars shows off in this combined infrared and X-ray view of
Big Family Friday, May 14, 2010
Hercules, the strongman, climbs into good view on May evenings
Not-So-Mighty Hercules Monday, May 3, 2010
Youthful Oldies Thursday, March 4, 2010


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


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