Nebula

= = =Nebula- //' Lost in the cloud'//=

What is Nebula?
Nebula is the form of a [|interstellar cloud] that absorbs the surroundings of cloud dust and gas in outer space. The Nebula mostly contians Hydrogen gas, which is then, later formed into helium. Nebula are the raw ingredients of a star.

Interstellar cloud forming: Link to the following image: []

Diffused Nebulae:
The two most common diffused nebulae are Emission nebulae and Reflection nebulae because each of them emit light while the other reflects so they both have a good combination within one another.

Emission Nebulae:
Emission Nebulae are clouds that consists of high temperature gas. The reddish light that is produced around the cloud is formed by the electrons and protons. They both combine within each other and form hydrogen atoms. Emission Nebulae is formed by the combination of ultraviolet light coming from a near-by star. It absorbs the radiation and later emits it to a much lower level. The reason why it is so red, is because it is taking out all the possible energy in the cloud and emitting it in the form of red light.

Emission Nebulae: Link to the following image: [|http://i.pbase.com/o6/12/768512/1/80821731.XQ9GiUnc.M8againFINAL.jpg]

Reflection Nebulae:
= = Reflection Nebulae is the opposite of Emission nebulae, infact reflection nebulae are the clouds of dust. The particles inside the dust contain reflective particles which passes down the light of a star to another star and so on.. It never finishes until it bounces into the earth clouds and into our own eyes. That is the reason why are sky is so blue, reflective dust reflect within one another and gives us 'light'.

Reflection Nebulae: Link to the following image: []

Different types of Nebulae:
There are different types of nebula in outter space,each have their own properties within each of them. Some other well known nebulaes are:

Dark Nebulae:
Just like the Nebula, the dark Nebula is a type of interstellar cloud which blocks out the light from background, or whatever is behind it.



Link to the following image: __http://en.wikipedia.org/wiki/File:Horsehead-Hubble.jpg__

Planetary nebulae tells us when a star's life is about to end, it throws out shells of gas. It is formed when a sun shaped star dies out, and begins to outbuild into a form, where it builds it own outer layers. If the sun dies out, the nebula gets bigger and expands into a giant star. The giant star will completely cover the earth, but after millions of years it will form back into its original size. It will eventually shrink making the outer layers so thin, it will form into a ring. The ring can be visible for 50,000 years but after a long period of time, the planetary nebula will blend into the outer space and mix with anything that is in outer space.

Link to the following image: []

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Supernova Remnant occurs when a giant star in a supernova, creates an explosion. For a long period of time it produced all the energy it can make, then when it goes overboard creates a star explosion, creating a supernova remnant.======



Stellar Nursery:
A Stellar Nursery is a type of Nebulae, its job is to develop new stars. A Stellar Nursery Nebulae shines so bright due to the formation of the the ultraviolet light and then is emitted from young newborn stars. The Eagle Nebula also falls into the group of 'Stellar Nursery'.

Following image from: http://www.nasa.gov/images/content/156012main_image_feature_643_ys_4.jpg

Eagle Nebula:
The Eagle Nebula falls into the group of 'Stellar Nursery', its job is very similar to the 'Stellar Nursery nebulae'. It brightly shines by the formation of the ultraviolet light, and then emitted from young newborn stars. In 1745- 1746 its was discovered by Jean-Phillippe de Cheseaux, the reason why it is called 'Eagle Nebula' is because its unique structure resembles as a eagle.

Image 1 from: http://web.rollins.edu/%7Ejsiry/eagle_nebula.jpg Image 2 from: http://en.wikipedia.org/wiki/File:Stellar_spire_eagle_nebula.jpg

Horse-head Nebula:
The Horse-head nebula consists of dark cloud dust and gases. It glows red due to the hydrogen gas being left behind the nebula for an extensive period of time, the thickness within the cloud traps the light coming through because of a powerful magnetic field. Sparkling stars within the cloud represent new-born stars, the horse-head nebulae is located in the constellation Orion.

Image 1 from: http://astronomy2008.files.wordpress.com/2008/09/horsehead-nebula.jpg Image 2 from: http://images.astronet.ru/pubd/2000/12/29/0001164477/kellyhenden_horsehead_c.jpg

Orion Nebula:
The orion Nebula is known as a turbulent gas cloud that picks up young hot stars, and uses it as a fuse to brighten up and develop a nebulae.



image from: http://abyss.uoregon.edu/%7Ejs/images/hst_orion_nebula.jpg

media type="youtube" key="8x41n9thAU8" width="425" height="350" Video of different Nebulaes. []

=Bibliography:= []

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http://astro.nineplanets.org/twn/types.html

http://en.wikipedia.org/wiki/Supernova_remnant

http://www.wisegeek.com/what-is-a-stellar-nursery.htm

http://en.wikipedia.org/wiki/Eagle_Nebula

http://en.wikipedia.org/wiki/Horsehead_Nebula