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21 Aug, 2019
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File:A Galaxy Of Birth And Death.jpg

KPNO/NOIRLab/NSF/AURA/M. T. Patterson (New Mexico State University)

Image processing: T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab), M. Zamani & D. de Martin (NSF’s NOIRLab)

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	12:38, 22 June 2023		6,631 × 4,662 (6.08 MB)	C messier	full size
	13:32, 29 March 2023		1,280 × 900 (234 KB)	Yiseth Romero	Uploaded a work by KPNO/NOIRLab/NSF/AURA/M. T. Patterson (New Mexico State University) Image processing: T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab), M. Zamani & D. de Martin (NSF’s NOIRLab) from https://noirlab.edu/public/images/iotw2221a/?nocache=true with UploadWizard

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Credit/Provider	KPNO/NOIRLab/NSF/AURA/M. T. Patterson (New Mexico State University)Image processing: T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab), M. Zamani & D. de Martin (NSF’s NOIRLab)
Source	NSF's NOIRLab
Short title	A Galaxy of Birth and Death
Image title	Captured by the Mosaic camera on the Nicholas U. Mayall 4-meter Telescope at the Kitt Peak National Observatory (KPNO), a Program of NSF’s NOIRLab, the spiral galaxy NGC 2403, also known as Caldwell 7, highlights the dynamic birth and death of stars. The glowing red spots dotting the galaxy are clouds of ionized hydrogen gas known as HII regions. These areas indicate the birth of young, hot stars, which often ionize nearby hydrogen gas during their dynamic formation. Conversely NGC 2403 has also been the home of the brightest and nearest observed death of a star this millennium: the supernova SN 2004dj. The region in NGC 2403 that contained the star which became a supernova in 2004 had been observed both before, during and after the explosion, providing a fascinating timeline of the impact of the event. Since star formation occurs on a timescale much longer than a human lifetime, the process has to be pieced together like a puzzle through observations of different stars in different stages of the stellar life cycle. Itis very satisfying for astronomers to be able to observe supernovae, which occur incredibly quickly even by human standards, to confirm and develop theories of the life cycle of stars.
Usage terms	Creative Commons Attribution 4.0 International License
Date and time of data generation	12:00, 25 May 2022
Software used	Adobe Photoshop 21.0 (Windows)
File change date and time	14:54, 12 March 2020
Date and time of digitizing	19:30, 24 January 2020
Date metadata was last modified	15:54, 12 March 2020
Unique ID of original document	xmp.did:d363cfad-0832-ff45-8e8f-432f33952b92
Keywords	NGC 2403
Contact information	https://noirlab.edu 950 North Cherry Ave. Tucson, AZ, 85719 USA
IIM version	4

File:A Galaxy Of Birth And Death.jpg

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25 May 2022

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