Back to Glossary
Nebula
A nebula is a giant cloud of gas (mostly hydrogen and helium) and cosmic dust situated between stars in the interstellar medium. Nebulae serve as sites of stellar birth and death—including emission nebulae that glow from ionized gas, reflection nebulae that scatter starlight, and dark nebulae that obscure background stars.
Source: science.nasa.gov
APODs including "Nebula"
The Local Bubble and the Galactic Neighborhood
12/04/2000
Celebrating Hubble With NGC 6751
07/04/2000
Eagle EGGs in M16
02/04/2000
Free-Floating Planets In Orion
31/03/2000
M20: The Trifid Nebula
28/03/2000
A Panorama of Oddities in Orion A
13/03/2000
Messier Marathon
11/03/2000
The Pipe Dark Nebula
05/03/2000
NGC 1999: Reflection Nebula in Orion
02/03/2000
The Pleiades Star Cluster
27/02/2000
Neighboring Galaxy: The Large Magellanic Cloud
22/02/2000
Young Suns
19/02/2000
X-Ray Stars Of Orion
04/02/2000
Colorful Clouds Of Carina
03/02/2000
NGC 2392 from the Newly Fixed Hubble
24/01/2000
NGC 7635: The Bubble Nebula
18/01/2000
The Rosette Nebula in Hydrogen, Oxygen, and Sulfur
11/01/2000
The Century that Defined Galaxy
30/12/1999
The Cat's Paw Nebula
07/12/1999
The Crab Nebula from VLT
22/11/1999
The Rotten Egg Planetary Nebula
01/11/1999
The Cat's Eye Nebula
31/10/1999
30 Doradus: The Tarantula Nebula
26/10/1999
M27: Not A Comet
23/10/1999
NGC 2261: Hubble's Variable Nebula
20/10/1999
NGC 2346: A Butterfly-Shaped Planetary Nebula
12/10/1999
New Stars In 30 Doradus
01/10/1999
Massive Stars Of 30 Doradus
30/09/1999
The Crab Nebula in X-Rays
29/09/1999
Our Galaxy in Stars, Gas, and Dust
27/09/1999