File:A Cosmic Magnifying Glass - Hubble Space Telescope Center Image PR00-08.jpg
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DescriptionA Cosmic Magnifying Glass - Hubble Space Telescope Center Image PR00-08.jpg |
English: Scanning the heavens for the first time since the successful December 1999 servicing mission, NASA's Hubble Space Telescope imaged a giant, cosmic magnifying glass, a massive cluster of galaxies called Abell 2218. This 'hefty' cluster resides in the constellation Draco, some 2 billion light-years from Earth. The cluster is so massive that its enormous gravitational field deflects light rays passing through it, much as an optical lens bends light to form an image. This phenomenon, called gravitational lensing, magnifies, brightens, and distorts images from faraway objects. The cluster's magnifying powers provides a powerful "zoom lens" for viewing distant galaxies that could not normally be observed with the largest telescopes. The picture is dominated by spiral and elliptical galaxies. Resembling a string of tree lights, the biggest and brightest galaxies are members of the foreground cluster. Researchers are intrigued by a tiny red dot just left of top center. This dot may be an extremely remote object made visible by the cluster's magnifying powers. Further investigation is needed to confirm the object's identity. The color picture already reveals several arc-shaped features that are embedded in the cluster and cannot be easily seen in the black-and- white image. The colors in this picture yield clues to the ages, distances, and temperatures of stars, the stuff of galaxies. Blue pinpoints hot young stars. The yellow-white color of several of the galaxies represents the combined light of many stars. Red identifies cool stars, old stars, and the glow of stars in distant galaxies. This view is only possible by combining Hubble's unique image quality with the rare lensing effect provided by the magnifying cluster. |
Date | |
Source | GRIN/NASA. HubbleSite: gallery, NewsCenter. |
Author | NASA, Andrew Fruchter and the ERO Team [Sylvia Baggett (STScI), Richard Hook (ST-ECF), Zoltan Levay (STScI)] (STScI). |
This image or video was catalogued by Space Telescope Science Institute of the United States National Aeronautics and Space Administration (NASA) under Photo ID: GPN-2000-000886 and Alternate ID: PR00-08. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing. Other languages:
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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.) | ||
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current | 07:29, 28 March 2009 | 3,109 × 1,587 (8.26 MB) | Syrcro (talk | contribs) | {{Information |Description=Title: A Cosmic Magnifying Glass <br /> Reference Numbers * Center: HSTI * Center Number: PR00-08 * GRIN DataBase Number: GPN-2000-000886 <br />Scanning the heavens for the first time since the successful December 1999 servicin |
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Image title | Abell 2218 HST WFPC2 I, V, B |
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Short title | Abell 2218 |
Date and time of data generation | 17 January 2000 |
JPEG file comment | File written by Adobe Photoshop¨ 5.0 |
IIM version | 2 |