File:Abell_383.jpg
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DescriptionAbell 383.jpg |
English: The giant cluster of elliptical galaxies in the centre of this image contains so much dark matter mass that its gravity bends light. This means that for very distant galaxies in the background, the cluster’s gravitational field acts as a sort of magnifying glass, bending and concentrating the distant object’s light towards Hubble. These gravitational lenses are one tool astronomers can use to extend Hubble’s vision beyond what it would normally be capable of observing.
Using Abell 383, a team of astronomers have identified and studied a galaxy so far away we see it as it was less than a billion years after the Big Bang. Viewing this galaxy through the gravitational lens meant that the scientists were able to discern many intriguing features that would otherwise have remained hidden, including that its stars were unexpectedly old for a galaxy this close in time to the beginning of the Universe. This has profound implications for our understanding of how and when the first galaxies formed, and how the diffuse fog of neutral hydrogen that filled the early Universe was cleared. |
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Date | ||||
Source | http://www.spacetelescope.org/images/heic1106a/ | |||
Author | NASA, ESA, J. Richard (CRAL) and J.-P. Kneib (LAM). Acknowledgement: Marc Postman (STScI) | |||
Permission (Reusing this file) |
This file is licensed under the Creative Commons Attribution 4.0 International license. Attribution: ESA/Hubble
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Items portrayed in this file
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12 April 2011
image/jpeg
466cca32bcd3e6b018bc84e260d21db926550a47
6,987,723 byte
2,380 pixel
2,417 pixel
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:41, 16 November 2017 | 2,417 × 2,380 (6.66 MB) | Ras67 | less compressed, with metadata | |
13:45, 12 April 2011 | 2,417 × 2,380 (2.34 MB) | Jmencisom | {{Information |Description ={{en|1=The giant cluster of elliptical galaxies in the centre of this image contains so much dark matter mass that its gravity bends light. This means that for very distant galaxies in the background, the cluster’s gravita |
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Width | 2,417 px |
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Height | 2,380 px |
Bits per component |
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Compression scheme | LZW |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop CS5 Macintosh |
File change date and time | 12:54, 7 April 2011 |
Color space | sRGB |
Date and time of digitizing | 13:09, 6 April 2011 |
Date metadata was last modified | 08:54, 7 April 2011 |
Unique ID of original document | uuid:96AF19D3FB53E011AA81CC6AEB3FE630 |
Copyright status | Copyright status not set |
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