File:Gravitational lensing in action (galaxy lensing).jpg
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DescriptionGravitational lensing in action (galaxy lensing).jpg |
English: This illustration shows how astronomers use gravitational lensing to study faint, distant galaxies by observing the distorted light emitted from them. |
Date | 7 February 2023, 09:26 (upload date) |
Source | Gravitational lensing in action |
Author | NASA, ESA & L. Calçada |
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This media was created by the National Optical-Infrared Astronomy Research Laboratory (NOIRLab).
Their website states: "Unless specifically noted, the images, videos, and music distributed on the public NOIRLab website, along with the texts of press releases, announcements, images of the week and captions; are licensed under a Creative Commons Attribution 4.0 International License, and may on a non-exclusive basis be reproduced without fee provided the credit is clear and visible." To the uploader: You must provide a link (URL) to the original file and the authorship information if available. | |
This file is licensed under the Creative Commons Attribution 4.0 International license.
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current | 15:33, 15 April 2023 | 4,000 × 3,000 (1.29 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/large/galaxy_lensing.jpg via Commons:Spacemedia |
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Credit/Provider | NASA, ESA & L. Calçada |
Source | NSF's NOIRLab |
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Date and time of data generation | 09:26, 7 February 2023 |
JPEG file comment | This illustration shows a phenomenon known as gravitational lensing, which is used by astronomers to study very distant and very faint galaxies. Note that the scale has been greatly exaggerated in this diagram. In reality, the distant galaxy is much further away and much smaller. Lensing clusters are clusters of elliptical galaxies whose gravity is so strong that they bend the light from the galaxies behind them. This produces distorted, and often multiple images of the background galaxy. But despite this distortion, gravitational lenses allow for greatly improved observations as the gravity bends the light’s path towards Hubble, amplifying the light and making otherwise invisible objects observable. A team of astronomers has used Abell 383, one such gravitational lens, to observe a distant galaxy whose light is resolved into two images by the cluster. The gravitational lensing effect means that astronomers have been able to determine fascinating insights about the galaxy that would not normally be visible even with Hubble or large ground-based telescopes. Among their discoveries is that the distant galaxy’s stars are very old, meaning that galaxies probably formed earlier in cosmic history than we first thought. |
Software used | Adobe Photoshop CS5 Macintosh |
File change date and time | 16:07, 6 April 2011 |
Date metadata was last modified | 18:07, 6 April 2011 |
Date and time of digitizing | 14:20, 6 April 2011 |
Unique ID of original document | xmp.did:08801174072068118DBBB404158EC81C |
Keywords | Abell 383 |
Contact information |
950 North Cherry Ave. Tucson, AZ, 85719 USA |
IIM version | 4 |