Nebula+-+AL

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Rubric: [[file:Space Exploration Adventure Rubric.doc]], [[file:Space Exploration Adventure Rubric.pdf]]
** Written Information **: the plural of nebula is nebulea.
 * the official deffinition of **nebula** is : any numerous clouds of gas or dust in instellular space.
 * What I find interesting is how most nebulae seem to look like objects such as the witch head nebula,the cat eye nebula, and the bubble nebula. Also in thew midst of my research i learned that nebula is latin for mist or cloud. Furthermore nebulas are the birth of a star.
 * Instellular medium (the gas between the stars, with its accompanying small solid particles) makes up the nebulae.
 * Some nebulae are called Emission Nebulae, because they emit their own light.
 * A blue relfection nebula rather than emitting their own light, they reflect the light of the stars around them.
 * Planetary NebulaePlanetary nebulae are shells of gas thrown out by some stars near the end of their lives. Our Sun will probably produce a planetary nebula in about 5 billion years. They have nothing at all to do with planets; the terminology was invented because they often look a little like planets in small telescopes. A typical planetary nebula is less than one light-year across.
 * Dark NebulaeDark nebulae are clouds of dust which are simply blocking the light from whatever is behind. They are physically very similar to reflection nebulae; they look different only because of the geometry of the light source, the cloud and the Earth. Dark nebulae are also often seen in conjunction with reflection and emission nebulae. A typical diffuse nebula is a few hundred light-years across. see also the Horse
 * Planetary nebula - A planetary nebula is a shell of gas produced by a star as it nears the end of its life cycle. Their name can be a bit misleading. They actually have nothing to do with planets. These nebulae were given this name because they often look like planets due to their round shape. The outer shell of gas is usually illuminated by the remains of the star at its center. The Ring Nebula (M57) in Lyra is one of the best examples of a planetary nebulae
 * famous nebulae-There are a few nebulae that can be seen with the naked eye and many more that can be detected with a good pair of binoculars. A telescope is required to bring our fine details. Unfortunately, the human eye is not sensitive enough to bring out the rich colors of most nebulae. It is the photograph that does the most justice to these incredible objects. Until recently, time exposures on film were the best way to bring a nebula's true colors. Today, digital photography has simplified the process. New tools like the Hubble space telescope are giving us views of nebulae that have never been seen before. Areas of active star formation have been identified in many galaxies that were once thought to be inert. Perhaps the most well known nebulae is the Orion Nebula, also known as M42. It is one of the very few that can be seen with the naked eye. It is a bright emission nebula over 30 light-years in diameter. The nebula is illuminated by a group of stars at its center known as the trapezium. Another popular favorite is the Lagoon Nebula, M8. It is much larger than the Orion Nebula, reaching over 150 light-years across the heavens. The Trifid Nebula, M20, is one of the most colorful. This reflection nebula contains a combination of elements that render it in rich hues of red, blue, and pink. Dark lanes of dust divide it into three distinct parts, giving rise to its name. One of the most famous planetary nebulae is the Ring Nebula, M57. This is a beautiful object that resembles a circular rainbow around a small central star. Another popular planetary nebula is the Dumbbell Nebula, M27. Its unmistakable bow tie shape gives it its name. The Crab Nebula, M1, is probably the best known supernova remnant. It is a shell of gas expelled by a supernova explosion. The nebula is illuminated by the 16th magnitude star remnant at its center. The Hubble space telescope has captured some breathtaking images of nebulae from all parts of the galaxy
 * **supernova remnant** (**SNR**) is the structure resulting from the explosion of a star in a supernova. The supernova remnant is bounded by an expanding shock wave and consists of ejected material expanding from the explosion, and the interstellar material it sweeps up and shocks along the way.


 * = [[image:http://www.nasa.gov/images/content/199948main_rs_image_feature_787_946x710.jpg width="281" height="275" align="bottom" caption="The Egg Nebula"]] ||= [[image:http://www.nasa.gov/images/content/199698main_rs_image_feature_762_946x710.jpg width="269" height="272" align="bottom" caption="Eskimo Nebula"]] ||= [[image:http://www.nasa.gov/images/content/200750main_rs_image_feature_864_946x710.jpg width="255" height="271" align="bottom" caption="bubble nebula"]] ||=  ||
 * = [[image:http://www.nasa.gov/images/content/284892main_image_1209_946-710.jpg width="271" height="215" align="bottom" caption="Witch Head Nebula"]] ||= [[image:http://www.daviddarling.info/images/Ring_Nebula_Hubble.jpg width="278" height="213" caption="ring nebula"]] ||= [[image:http://t0.gstatic.com/images?q=tbn:ANd9GcRZ6rpYPnOO9ivvMZrNnkRG0KQF80rR5QfY5Vol4cdtGKQ8lclx width="266" height="211" caption="buterfly nebula"]] ||=  ||

**Works Cited** "Milky Way." //Kids InfoBits Presents: Astronomy//. Gale, 2008. Reproduced in Kids InfoBits. Detroit: Gale, 2012. "The Milky Way." //WMAP's Universe//. NASA, 28 June 2010. Web. 06 Mar. 2012. . Vergano, Dan. "Galaxy Bracketed by Big Bubbles." //USA Today// 10 Nov. 2010: 05A. Web. 6 Mar. 2012. = =

**Your Source List:** "Milky Way." //Kids InfoBits Presents: Astronomy//. Gale, 2008. Reproduced in Kids InfoBits. Detroit: Gale, 2012. "The Milky Way." //WMAP's Universe//. NASA, 28 June 2010. Web. 06 Mar. 2012. <[]>. Vergano, Dan. "Galaxy Bracketed by Big Bubbles." //USA Today//10 Nov. 2010: 05A. Web. 6 Mar. 2012. "Milky Way." //Kids InfoBits Presents: Astronomy//. Gale, 2008. Vergano, Dan. "Galaxy Bracketed by Big Bubbles." //USA Today// 10 Nov. 2010: 05A. Web. 6 Mar. 2012. []

**Topic: Research Focus** Nebulae The composition of nebulae and their shapes

**Notes** nebula forms nebulas can look like different things like the witch head nebula,cat eye nebula, and bubble nebula

The official definition of a nebula is: any of numerous clouds of gas or dust in interstellar space

**nebula** **,** ( Latin: “mist” or “cloud”)

Dark Nebulae Dark nebulae are clouds of [|dust] which are simply blocking the light from whatever is behind. They are physically very similar to reflection nebulae; they look different only because of the geometry of the light source, the cloud and the Earth. Dark nebulae are also often seen in conjunction with reflection and emission nebulae. A typical diffuse nebula is a few hundred light-years across. (NGC 2264 shown; see also the [|Horsehead Nebula] ) Dark NebulaeDark nebulae are clouds of [|dust] which are simply blocking the light from whatever is behind. They are physically very similar to reflection nebulae; they look different only because of the geometry of the light source, the cloud and the Earth. Dark nebulae are also often seen in conjunction with reflection and emission nebulae. A typical diffuse nebula is a few hundred light-years across. (NGC 2264 shown; see also the [|Horsehead Nebula])