Talk:Nebula

Goal?

"The main goal in this stage is to achieve equilibrium."

Stars and nebula don't have goals... —Preceding unsigned comment added by 129.123.248.44 (talk) 07:12, 25 April 2009 (UTC)

Dark Nebula under Diffuse Nebula

the dark nebula is listed within the category "Diffuse Nebula", even though it says that dark nebulae arent a type of diffuse nebulae —Preceding unsigned comment added by 216.232.237.84 (talk) 02:17, 13 December 2007 (UTC)

Possible Misinformation

The following material is not accurate, so I put it here until I (or someone else) corrects it and reincorporates it into the main text. AN

Stars emanate gas during novae and supernovae, giving rise to planetary nebulae and supernova remnants, respectively. In a nova, the star sloughs off its outer layers of gas as it collapses into a dwarf, and these clouds are propelled outward by the remaining star's stellar windand glow from the heat of the star. In a supernova, the star collapses violently on itself and explodes with an enormous shock wave which lights up all the interstellar gas in the region, and the remaining neutron star or black hole emits highly charged radiation as it sucks up everything around it, keeping the center of the cloud brightly lit

At this point the star may die or move on, and the cloud may disperse and merge with other clouds. But when the dust is dense enough, gravity will turn the inevitable knots and perturbances into new stars. These new stars may reflect light off the gas, creating a reflection nebula, or excite the gas with their radiation, creating an emission nebula. Many nebulae display both characteristics, and are referred to as diffuse nebulae. In addition, the lit parts of this kind of nebula may be blocked by unlit gas on the nebula's periphery, creating a dark nebula.

--Unknown Editor from an early version of the talkpage

I also removed some rather obvious inaccuracies from the article. Specifically, 66.178.172.98 had made an edit claiming that the Eagle Nebula was now considered a galaxy, which sounds laughably implausible to me. Hope I wasn't out of line, as I am kind of new around here. --Cecilkorik 02:33, 15 May 2007 (UTC)

Merging Types of Nebulae

I don't know who proposed the merge, but I agree with it. When I first came to the Nebula article, I was actually looking for more information about the different types of nebula. I would never have thought to look under 'Types of Nebula' to find that information. Most other articles seem to provide a fairly comprehensive discussion of types in the main article, only branching off into a separate article if the information becomes extremely detailed, which is not the case here. In any case, there should be at least some discussion of the various types of nebulae in the main article, as currently there is none. Cecilkorik 18:16, 24 May 2007 (UTC)

This article now needlessly repeats itself now that Types of nebula has been merged. It needs a bit of re-writing. Rip-Saw 12:42, 23 August 2007 (UTC)

Molten planets

I would like to see an explanation of why the planets were initially in a molten form if they formed from nebulae. 71.102.74.156 (talk) 02:45, 9 December 2007 (UTC)

did you know that the star forbidden galaxy of nebularmeland contains 6 billion million geeknebulars, thats 40 000 000 nebulars all together... in just one galaxy —Preceding unsigned comment added by 86.141.48.0 (talk) 20:21, 4 September 2008 (UTC)

I would also like to see that but also i would like to just have a understandable explanation, or just a simple definition. Like :

nebula- a large amount of clouds of gas or dust in space.

I need something that would be understandable to a small child. Or for someone doing homework and has no clue what a certian word is. Otherwise, they, as i, will go to some other page to find the information i need —Preceding unsigned comment added by 72.177.4.236 (talk) 17:38, 7 December 2008 (UTC)

Merger proposal

This merge tag has been left here for about 4 months as far as I can tell...Creating a place for discussion. From what I can see, the two are syonymous (??) but I will defer to someone who knows more. Casliber (talk · contribs) 19:29, 16 February 2009 (UTC)

• Oppose. They are not exactly synonymous. Interstellar cloud is just a cloud of gas regardless of its external appearance. Some gas clouds are invisible. Nebula refers to a luminous extended object. Initially this definition included galaxies and star clusters as well. Another difference is their origin. For instance, planetary nebulas are technically gas clouds, although they are never called such. Interstellar cloud commonly refers to a cloud that formed naturally from the interstellar medium, and was not ejected from a star. Ruslik (talk) 19:54, 16 February 2009 (UTC)

Cool. Not sure who placed the merge tag in the first place....Casliber (talk · contribs) 20:00, 16 February 2009 (UTC)

I found this message at WP:PM:

Merge Interstellar cloud with Nebula those are two articles about the same subject. Carsrac (talk) 18:13, 10 December 2007 (UTC)

76.66.196.229 (talk) 08:07, 18 February 2009 (UTC)

To make a good encyclopedia (and avoid future merger proposals) the articles should reflect the abovementioned differences between the 2 terms, preferably in the article lead section. Debresser (talk) 17:17, 19 February 2009 (UTC)

As there appears to be no support for the proposed merge, I've removed the tags from the articles. Euryalus (talk) 10:45, 28 March 2009 (UTC)

Headline text

more information would be good. —Preceding unsigned comment added by 99.140.74.186 (talk) 22:43, 1 April 2009 (UTC)

Top Right Picture

Cough Cough, is it supposed to be called "Testical Emission Garren Nebula"? (or am I just being childish) 91.105.64.59 (talk) 14:15, 11 June 2009 (UTC)