File:M31 after.tif

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English: X-ray Images of M31 The first Chandra image shows a small region in the center of Andromeda galaxy (aka M31) taken before January 2006 and the second shows the same region taken after January 2006. Before 2006, three X-ray sources are clearly visible, including one faint source close to the center of the image. After 2006, a fourth source, called M31*, appears just below and to the right of the central source, produced by material falling onto the supermassive black hole in M31.

Date

25 May 2010

Source

https://chandra.harvard.edu/photo/2010/m31/more.html

Author

Credit: X-ray (NASA/CXC/SAO/Li et al.

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	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."

see Category:Chandra images

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	15:15, 10 February 2020		1,200 × 1,200 (241 KB)	Fabian RRRR (talk \| contribs)	== {{int:filedesc}} == {{Information \|description ={{en\|1=X-ray Images of M31 The first Chandra image shows a small region in the center of Andromeda galaxy (aka M31) taken before January 2006 and the second shows the same region taken after January 2006. Before 2006, three X-ray sources are clearly visible, including one faint source close to the center of the image. After 2006, a fourth source, called M31*, appears just below and to the right of the central source, produced by material f...

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Commons:WikiProject Aviation/recent uploads/2020 February 10

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This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Image title	The large image here shows an optical view, with the Digitized Sky Survey, of the Andromeda Galaxy, otherwise known as M31. The inset shows Chandra images of a small region in the center of Andromeda. The image on the left shows a sum of Chandra images taken before January 2006 and the image on the right shows a sum of images taken after January 2006. Before 2006, three X-ray sources are clearly visible, including one faint source close to the center of the image. After 2006, a fourth source, called M31*, appears just below and to the right of the central source, produced by material falling onto the supermassive black hole in M31.
Author	Chandra X-ray Observatory Center
Width	1,200 px
Height	1,200 px
Bits per component	8 8 8
Compression scheme	LZW
Pixel composition	RGB
Orientation	Normal
Number of components	3
Number of rows per strip	72
Horizontal resolution	300 dpi
Vertical resolution	300 dpi
Data arrangement	chunky format
File change date and time	16:31, 20 May 2010
Exif version	2.21
Color space	sRGB

File:M31 after.tif

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