Astronomy Picture of the Day
Posted By admin On February 13, 2011 @ 10:31 pm In Photo Essays | Comments Disabled
Visit the NASA/JPL website to view more Astronomy Pictures of the Day [1]
[2]
The Rosette Nebula
Credit & Copyright [3]: Brian Lula [4]
Explanation: Would the Rosette Nebula [5] by any other name [6] look as sweet [7]? The bland New General Catalog [8] designation of NGC 2237 [9] doesn’t appear to diminish the appearance of this [10] flowery emission nebula [11]. Inside the nebula lies an open cluster [12] of bright young stars designated NGC 2244 [13]. These stars formed about four million years ago [14] from the nebular material and their stellar winds [15] are clearing a hole in the nebula’s center, insulated by a layer of dust [16] and hot gas. Ultraviolet light [17] from the hot cluster stars causes the surrounding nebula to glow [18]. The Rosette Nebula [19] spans about 100 light-years [20] across, lies about 5000 light-years away [21], and can be seen with a small telescope towards the constellation [22] of the Unicorn (Monoceros [23]).
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URL to article: http://www.berthoudrecorder.com/2011/02/13/astronomy-picture-of-the-day-11/
URLs in this post:
[1] Astronomy Pictures of the Day: http://antwrp.gsfc.nasa.gov/apod/
[2] Image: http://www.berthoudrecorder.com/wp-content/uploads/2011/02/rosette_lula_1700.jpg
[3] Copyright: http://apod.nasa.gov/apod/lib/about_apod.html#srapply
[4] Brian Lula: http://www.heavensgloryobservatory.com/
[5] Rosette Nebula: http://www.seds.org/messier/xtra/ngc/n2244.html
[6] name: http://www.bartleby.com/100/138.28.22.html
[7] sweet: http://www.berthoudrecorder.comftp://ibiblio.org/pub/docs/books/gutenberg/etext00/0ws1610.txt
[8] New General Catalog: http://en.wikipedia.org/wiki/New_General_Catalogue
[9] NGC 2237: http://www.google.com/images?hl=en&biw=1024&bih=974&gbv=2&tbs=isch%3A1&sa=1&q=%2Bsite%3Aapod.nasa.gov+Rosette&aq=f&aqi=&aql=&oq=
[10] this: http://www.heavensgloryobservatory.com/Color_Jpegs/ngc2244NB03.jpg
[11] emission nebula: http://apod.nasa.gov/apod/emission_nebulae.html
[12] open cluster: http://apod.nasa.gov/apod/open_clusters.html
[13] NGC 2244: http://apod.nasa.gov/apod/ap000822.html
[14] formed about four million years ago: http://adsabs.harvard.edu/abs/1993ApJ...414..664K
[15] stellar winds: http://apod.nasa.gov/apod/ap000318.html
[16] dust: http://apod.nasa.gov/apod/ap030706.html
[17] Ultraviolet light: http://science.hq.nasa.gov/kids/imagers/ems/uv.html
[18] glow: http://www.youtube.com/watch?v=0brmw8sP-Js
[19] Rosette Nebula: http://apod.nasa.gov/apod/ap000111.html
[20] light-years: http://domeofthesky.com/clicks/lightyear.html
[21] about 5000 light-years away: http://adsabs.harvard.edu/abs/2000A%26A...358..553H
[22] constellation: http://apod.nasa.gov/apod/http://www.astro.wisc.edu/~dolan/constellations/extra/constellations.html
[23] Monoceros: http://chandra.harvard.edu/photo/constellations/monoceros.html
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