File:Evidence of a Galactic Collision.jpg
Original file (3,000 × 2,400 pixels, file size: 2.83 MB, MIME type: image/jpeg)
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Summary
[edit]DescriptionEvidence of a Galactic Collision.jpg |
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. |
Date | |
Source | http://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: http://www.spitzer.caltech.edu/info/18-Image-Use-Policy
Licensing
[edit]Public domainPublic domainfalsefalse |
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.) | ||
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 23:20, 14 June 2011 | 3,000 × 2,400 (2.83 MB) | Spitzersteph (talk | contribs) |
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Metadata
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Author | Spitzer Space Telescope |
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Copyright holder | http://www.spitzer.caltech.edu/Media/mediaimages/copyright.shtml |
Image title |
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Short title |
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Credit/Provider | NASA/JPL-Caltech/D. Block (Anglo American Cosmic Dust Lab, SA) |
Headline | 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 ring deep within the Andromeda galaxy. |
Source | Spitzer Space Telescope |
Usage terms |
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Date and time of data generation | 18 October 2006 |
Width | 3,000 px |
Height | 2,400 px |
Bits per component |
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Compression scheme | LZW |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop CS3 Macintosh |
File change date and time | 14:35, 5 June 2009 |
Color space | Uncalibrated |
Contact information |
http://www.spitzer.caltech.edu 1200 E. California Blvd. Pasadena, CA, 91125 USA |
Keywords |
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IIM version | 2 |