File:Star-Forming "Bubble" RCW 79.jpg

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DescriptionStar-Forming "Bubble" RCW 79.jpg	English: RCW 79 is seen in the southern Milky Way, 17,200 light-years from Earth in the constellation Centaurus. The bubble is 70-light years in diameter, and probably took about one million years to form from the radiation and winds of hot young stars. The balloon of gas and dust is an example of stimulated star formation. Such stars are born when the hot bubble expands into the interstellar gas and dust around it. RCW 79 has spawned at least two groups of new stars along the edge of the large bubble. Some are visible inside the small bubble in the lower left corner. Another group of baby stars appears near the opening at the top. NASA's Spitzer Space Telescope easily detects infrared light from the dust particles in RCW 79. The young stars within RCW79 radiate ultraviolet light that excites molecules of dust within the bubble. This causes the dust grains to emit infrared light that is detected by Spitzer and seen here as the extended red features.
Date	10 March 2004
Source	http://www.spitzer.caltech.edu/images/2324-sig05-001-A-Bubble-Bursts
Author	NASA/JPL-Caltech/E. Churchwell (University of Wisconsin-Madison)

	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	20:17, 21 June 2011		2,600 × 2,925 (5.17 MB)	Spitzersteph

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Author	Spitzer Space Telescope
Copyright holder	http://www.spitzer.caltech.edu/Media/mediaimages/copyright.shtml
Width	2,600 px
Height	2,925 px
Compression scheme	LZW
Pixel composition	RGB
Orientation	Normal
Number of components	4
Horizontal resolution	325 dpi
Vertical resolution	325 dpi
Data arrangement	chunky format
Software used	Adobe Photoshop CS3 Macintosh
File change date and time	14:30, 5 June 2009
Color space	Uncalibrated