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2009-01-16 18:51:17
2009-01-16 18:51:17

a nebula is one nebula. nebulae are 2 or more nebulas.

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"Nebula" is a astronomical term for a cloud of gas and dust. "Nebulae" is the plural of "Nebula" and refers to more than one such cloud.


Planetary nebulae (the cat's eye nebula) Emission nebulae (the orion nebula) Dark nebulae (the horsehead nebula) Supernova remnant nebulae (the crab)


There isn't 'an' Eagle Nebula. There is 'the' Eagle Nebula. This is just the familiar name for a large cloud surrounding the Open Cluster M16. Nebulae come in all conceivable shapes and sizes, so they are all different from each other!


Bright nebula are clouds of gas and dust that shine by reflected starlight. Dark nebula are clouds of dust and colder gas that can be seen by their silhouette against brighter objects behind them in the line of sight.


A nebula is a region of interstellar gas and dust. Dark nebulae such as the Horsehead Nebula are so dense that they block light from other sources, such as background emission nebulae, reflection nebulae, or other stars. Other types of nebulae do reflect light. Emission nebulae are clouds of ionized gas that allow red, blue, and violet light through. Generally, these nebulae appear reddish. Reflection nebulae are clouds of dust that simply reflect light from nearby stars. The dust particles of reflection nebulae usually only scatter blue light, so the appearance is blue.


a nebula is classified by a planetary nebulae


=Reflection Nebulae== Emission Nebulae== Dark Nebulae== Planetary Nebulae== Supernova Remnant=



some nebulae are formed from massive supernova explosion.


A nebula is a region of interstellar gas and dust. Emission nebulae are clouds of ionized gas that allow red, blue, and violet light through. Generally, these nebulae appear reddish. Reflection nebulae are clouds of dust that simply reflect light from nearby stars. The dust particles of reflection nebulae usually only scatter blue light, so the appearance is blue. Other types of nebulae don't reflect light. Dark nebulae such as the Horsehead Nebula are so dense that they block light from other sources, such as background emission nebulae, reflection nebulae, or other stars.


Eagle Nebula Orion Nebula


Horsehead Nebula doesn't glow like other nebulae because it is older than other nebulae and was probably a lot smaller. In addition, Horsehead Nebula is farther away from the Earth than other nebulae, so it may seem that it doesn't glow as bright as other nebulae. No, this isn't right! The horsehead nebula doesn't glow for one reason - it isn't illuminated by any stars whose energy is enough to make the gas shine. That's the only difference between a 'bright' diffuse nebula (like M42) and a 'dark' one like the Horsehead or the Coalsack. M42 (the Orion nebula) is bright because there are several hot, energetic stars embedded inside it, and which cause it to 'shine'.


Yes, a lot. For example the Cocoon nebula, the North America Nebula, the Pelican Nebula, the Veil Nebula and the Crescent Nebula. In addition to the nebulae, Cygnus has binary stars, exoplanets, the X-ray source Cygnus-X1, etc.


The noun 'nebula' is singular, a word for one cloud of interstellar gas and dust.There are two accepted forms for the plural: nebulae and nebulas.


a nebula is a large amount of gas and dust spread out in an immense volume that makes up a star while a prostar is the earliest stage of a star.


I think its the helix nebula


The answer will depend on the amount of matter in the nebula.


yes some of the largest nebulae in the milky way galaxy are the horsehead nebula and the eagle nebula.


The nebula that can be seen without a telescope is the Great Orion nebula.


Both are the same except the solar nebula is the nebula that formed our solar system.


A solar nebula is related to the formation of our Solar System, any other nebula is just a nebula.


Stars are formed in Nebulae (the plural of nebula)....


Nebulae are found in most galaxies


From Wikipedia; "The Cat's Eye Nebula (NGC 6543) is a planetary nebula in the constellation of Draco."


The Nebula or Nebulae are formed and found in space, within the many billions of galaxies. They are the birthplace and nurseries for the stars.



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