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![Sig06-025](/images/nature/galaxies/sig06-025.jpg)
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Summary
Description |
English: Astronomers have new evidence that the Andromeda spiral galaxy was involved in a violent head-on collision with the neighboring dwarf galaxy Messier 32 (M32) more than 200 million years ago. Infrared photographs taken with NASA's Spitzer Space Telescope revealed a never-before-seen dust ring deep within the Andromeda galaxy. When combined with a previously observed outer ring, the presence of both dust rings suggests that M32 plunged through the disk of Andromeda along Andromeda's polar axis approximately 210 million years ago. This image was obtained by the Infrared Array Camera (IRAC) at a wavelength of 8.0 microns.
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Date | 18 October 2006 |
Source | https://www.spitzer.caltech.edu/images/2220-sig06-025-Forensic-Evidence-of-a-Galactic-Collision |
Author | NASA/JPL-Caltech/D. Block (Anglo American Cosmic Dust Lab, SA) |
Image use policy: https://www.spitzer.caltech.edu/info/18-Image-Use-Policy
Licensing
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This file is in the public domain because it was 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.)
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Warnings:
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Public Domain
EXIF data: | |
File name | sig06-025.jpg |
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Size, Mbytes | 1.341921875 |
Mime type | image/jpeg |
Orientation of image | 1 |
Image resolution in width direction | 300 |
Image resolution in height direction | 300 |
Unit of X and Y resolution | 2 |
Color space information | 65535 |
Exif image width | 3000 |
Exif image length | 2400 |
Software used | Adobe Photoshop CS2 Macintosh |
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