File:M57 The Ring Nebula.JPG

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NASA's Hubble Space Telescope has captured the sharpest view yet of the most famous of all planetary nebulae: the Ring Nebula (M57). In this October 1998 image, the telescope has looked down a barrel of gas cast off by a dying star thousands of years ago. This photo reveals elongated dark clumps of material embedded in the gas at the edge of the nebula; the dying central star floating in a blue haze of hot gas. The nebula is about a light-year in diameter and is located some 2000 light-years from Earth in the direction of the constellation Lyra.

The colors are approximately true colors. The color image was assembled from three black-and-white photos taken through different color filters with the Hubble telescope's Wide Field Planetary Camera 2. Blue isolates emission from very hot helium, which is located primarily close to the hot central star. Green represents ionized oxygen, which is located farther from the star. Red shows ionized nitrogen, which is radiated from the coolest gas, located farthest from the star. The gradations of color illustrate how the gas glows because it is bathed in ultraviolet radiation from the remnant central star, whose surface temperature is a white-hot 120,000 degrees Celsius (216,000 degrees Fahrenheit).

العربية: السديم الحلقي، سديم كوكبي مشابه لما ستصبح عليه الشمس.
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Source https://hubblesite.org/contents/news-releases/1999/news-1999-01.html (direct link)
Author The Hubble Heritage Team (AURA/STScI/NASA)
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This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use.

The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org.

For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag.
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-2000-000964 and Alternate ID: PR99-01.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.
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Date/TimeThumbnailDimensionsUserComment
current02:06, 21 December 2006Thumbnail for version as of 02:06, 21 December 20061,215 × 1,241 (631 KB)Egg (talk | contribs)high quality
14:49, 5 November 2005Thumbnail for version as of 14:49, 5 November 20051,024 × 768 (41 KB)Czar (usurped) (talk | contribs)NASA image of M57, the Ring Nebula, taken from English Wikipedia. Image Credit: NASA and The Hubble Heritage Team (STScI/AURA) [http://www.stsci.edu/institute/Copyright] ==Source== * http://heritage.stsci.edu/1999/01/index.html

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