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Hoag's Object - Ring Galaxy. Maximum Print Size: 10" x 9" Photographer/Artist: NASA Public Domain Image Number: 0124-1009-1013-1902 License This Image Poster Art-Print Description: Photo of hoag's Object - Ring Galaxy. This is a photo by NASA Public Domain showing hoag's Object - Ring Galaxy. Is this one galaxy or two? Astronomer Art Hoag first asked this question when he chanced upon this unusual extragalactic object. On the outside is a ring dominated by bright blue stars, while near the center lies a ball of much redder stars that are likely much older. Between the two is a gap that appears almost completely dark. How Hoag's Object formed remains unknown, although similar objects have been identified and collectively labeled as a form of ring galaxy. Genesis hypotheses include a galaxy collision billions of years ago and the gravitational effect of a central bar that has since vanished. This image, taken by the Hubble Space Telescope in July 2001, reveals unprecedented details of Hoag's Object and may yield a better understanding. Hoag's Object spans about 100,000 light years and lies about 600 million light years away toward the constellation of the Snake (Serpens). Coincidentally, visible in the gap (at about one o'clock) is yet another ring galaxy that likely lies far in the distance. Image Credit: NASA, R. Lucas (STScI/AURA) Image courtesy of NASA. NASA images are in the public domain and may be used for free, however certain restrictions may apply. This public domain image may not be used in any way suggesting approval or endorsement of any people appearing in the photos. Please read the NASA guidelines for use for more information and info about using the NASA insignia logo and other intellectual property that may appear in these NASA public domain images. Stock photography by NASA Public Domain associated terms: poster, posters, art print, art prints, posters and art prints, astronomy, astrophotography, beauty, beauty of nature, deep sky object, deep space, deep space object, discovery, distant galaxy, free public domain, galaxy, hoag s object, hoags object, hoags object ring galaxy, hst, hubble space telescope, nasa, nasa images, nasa public domain, nasa public domain photo, nasa public domain photos, national aeronautics and space administration, nature, outer space, public domain, ring galaxy, science, us government, art hoag,

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