A generic term for a fuzzy, diffuse astronomical object. Astronomers have observed four different types of nebulae: H II regions, reflection nebulae, planetary nebulae, and supernova remnants.

Featured Images

Elephant Trunk Nebulan
Elephant's Trunk Sunday, October 12, 2014
NGC 3590
Young and Future Stars Thursday, May 22, 2014
Space-based infrared view of the Rosette Nebula
Ruffled Rose Friday, February 28, 2014
NGC 2264, a stellar nursery in Monoceros
Star Factory Wednesday, February 26, 2014
Close-up view of the California Nebula in infrared light.
California Nebula Saturday, January 25, 2014
Close-up Hubble Space Telescope view of the Orion Nebula
Beautiful Birthplace Thursday, January 23, 2014
RS Puppis, a supergiant star seen by Hubble Space Telescope
Dusty Skies Wednesday, December 18, 2013
The Cat's Paw Nebula in submillimeter and near-infrared light
Star Maker Friday, September 27, 2013
Dumbbell Nebula, M27
Grand Finale Tuesday, September 24, 2013
View of the 30 Doradus star cluster and the massive binary system R144
Megastars Tuesday, July 9, 2013
Starbirth region on the edge of the Milky Way galaxy
Starbirth Thursday, June 6, 2013
The Pencil Nebula, a portion of the giant Vela Supernova Remnant
Blast from the Past Thursday, April 4, 2013
Star forming region in Orion
Hiding Places Wednesday, January 23, 2013
The Lagoon Nebula, M8, from the European Southern Observatory
Pink Lagoon Thursday, July 26, 2012
Infrared image of the Carina Nebula from space-based Herschel Observatory
Busy Nursery Wednesday, June 6, 2012
Newborn stars in the Orion Nebula
Bright Babies Thursday, March 1, 2012
The Carina Nebula, a massive stellar nursery
Star Factory Monday, February 13, 2012
Infrared view of starbirth in the vast nebula complex Cygnus X
Busy Nursery Friday, January 13, 2012
Horsehead Nebula photographed through a McDonald Observatory telescope
3D Horsehead Tuesday, December 20, 2011
Optical and radio image of the Carina Nebula, a vast stellar nursery
Birthplace of the Stars Thursday, November 17, 2011
IC 2944, a stellar nursery in the constellation Centaurus
Seeing Red Thursday, September 22, 2011
A view of NGC 3582, a large stellar nursery in Karina
Life and Death Tuesday, April 19, 2011
Streamers of dust partially obscure the "seven sisters," members of the Pleiades
Veiled Sisters Wednesday, April 6, 2011
New stars and the raw materials for more stars in the stellar nursery NGC 6729
Star Maker Thursday, March 24, 2011
M78, a reflection nebula in Orion
Beautiful Reflection Monday, February 21, 2011
False-color image of Orion Nebula from European Southern Observatory
Delicate Power Friday, January 21, 2011
Infrared image of the Lagoon Nebula
Blue Lagoon Thursday, January 6, 2011
The Horsehead Nebula
Galloping Nebula Saturday, January 8, 2011
Visible and X-ray image of a supernova remnant in the Large Magellanic Cloud
Holiday Decoration Thursday, December 16, 2010
IC 2118, the Witch Head Nebula
Witch Head Nebula Friday, November 26, 2010
The California Nebula, in Perseus
Stately Nebula Saturday, November 6, 2010
Messier 27
Heavy Lifting Saturday, August 7, 2010
The remains of a supernova explosion form complex loops and filaments in this co
Colorful Aftermath Thursday, May 27, 2010
Starbirth Factories
Starbirth Factories Monday, May 24, 2010
Star Nursery Wednesday, February 10, 2010
Veiling the Pleiades Monday, October 19, 2009
Cool Galaxy Monday, October 5, 2009
Colorful Nursery Thursday, July 9, 2009
Hard Labor Tuesday, June 30, 2009
Final Days Thursday, February 12, 2009
Stellar Nursery Thursday, February 21, 2008
Thrown for a Loop Wednesday, January 9, 2008
Future Splendor Saturday, December 15, 2007
Beautiful in Death Thursday, August 23, 2007
Home of the Stars Thursday, July 26, 2007
Tearing Down a Nursery Thursday, April 26, 2007
Clearing Out the Neighborhood Tuesday, January 9, 2007
Horsin' Around Saturday, December 23, 2006
Cosmic Bauble Wednesday, December 6, 2006
Bad Neighbor Saturday, December 2, 2006
Psychedelic Gas Friday, June 16, 2006
Bright Spider Tuesday, May 16, 2006
Dark Beauty Friday, April 7, 2006
Twister! Friday, January 20, 2006

Radio Programs

The Elephant’s Trunk An elephant’s trunk in the northern sky Sunday, October 12, 2014
Construction Zone A busy construction zone around a star Monday, August 11, 2014
The Brick Building a future stellar nursery Monday, July 28, 2014
Sagittarius A steaming teapot in the southern sky Thursday, July 24, 2014
Eagle Nebula Inspirational beauty in the southern sky Saturday, June 21, 2014
Rosette Nebula A colorful stellar birthplace Friday, February 28, 2014
Cone Nebula A small, dark “horn” for the unicorn Thursday, February 27, 2014
NGC 2264 Lighting up a stellar nursery Wednesday, February 26, 2014
California Nebula California in the stars Saturday, January 25, 2014
Orion Nebula A busy stellar nursery Thursday, January 23, 2014
Barnard 68 Lighting up a dark cloud Sunday, July 7, 2013
Vela A giant cloud of stellar debris Thursday, April 4, 2013
Guitar Nebula Strumming a few astronomical notes Saturday, March 16, 2013
Steamy Sights Steamy sights in the southern sky Thursday, July 26, 2012
Pipe Nebula Lighting up a dark nebula Sunday, June 17, 2012
Horsehead Nebula Drifting along with an interstellar cloud Tuesday, December 20, 2011
Betelgeuse II Looking for the “edge” of a giant star Friday, December 2, 2011
Serpens Splitting up a faint constellation Wednesday, September 14, 2011
Smith's Cloud A future stellar nursery Sunday, July 17, 2011
Flickering Crab A dead but fascinating star Friday, April 8, 2011
Spinning Horsehead A spinning horse's head Saturday, January 8, 2011
Witch Head Nebula An astronomical youth movement Friday, November 26, 2010
California Nebula Expanding California’s borders Saturday, November 6, 2010
Counting Clouds Counting up stellar nurseries Monday, August 9, 2010
CTB 102 A giant but hidden stellar nursery Wednesday, July 28, 2010
Cone Nebula A dark pillar of starbirth Tuesday, February 23, 2010
Monoceros The treasures of the unicorn Monday, February 22, 2010
Orion Planets A hostile location for new planets Tuesday, February 9, 2010
Regal Explosions, Part 2 A bashful exploding star Friday, November 6, 2009
Merope Nebula A dusty cloud around the Pleiades Monday, October 19, 2009
Dumbbell Nebula The shy little celestial fox Sunday, September 6, 2009
Tarantula Nebula Stellar "eggs" from a tarantula Monday, May 25, 2009
S Monocerotis Lighting up the unicorn Sunday, February 22, 2009
Charred Building Blocks The smoky taste of life's building blocks Thursday, January 22, 2009
Cosmic Dust Sweeping up after the stars Monday, January 19, 2009


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